Home / 4,220.81-6,331.23-1,299.10

Finding the Fourth Proportional to 4,220.81, 6,331.23 and 1,299.10

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Solution

The fourth proportional to 4,220.81, 6,331.23 and 1,299.10 is: 1,948.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.81 : 6,331.23 = 1,299.10 : x
  2. Step 2: Convert to fraction form
    4,220.81/6,331.23 = 1,299.10/x
  3. Step 3: Cross multiply
    4,220.81x = 6,331.23 × 1,299.10
  4. Step 4: Simplify right side
    4,220.81x = 8,224,900.89
  5. Step 5: Solve for x
    x = 8,224,900.89/4,220.81
  6. Step 6: Final answer
    x = 1,948.65

Related Problems

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Half scale
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Double scale
Find fourth proportional to 4,221.81, 6,332.73 and 1,300.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.