Home / 5,247.81-7,871.45-1,299.04

Finding the Fourth Proportional to 5,247.81, 7,871.45 and 1,299.04

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Solution

The fourth proportional to 5,247.81, 7,871.45 and 1,299.04 is: 1,948.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.81 : 7,871.45 = 1,299.04 : x
  2. Step 2: Convert to fraction form
    5,247.81/7,871.45 = 1,299.04/x
  3. Step 3: Cross multiply
    5,247.81x = 7,871.45 × 1,299.04
  4. Step 4: Simplify right side
    5,247.81x = 10,225,321.91
  5. Step 5: Solve for x
    x = 10,225,321.91/5,247.81
  6. Step 6: Final answer
    x = 1,948.50

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Double scale
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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.