Home / 4,219.81-6,329.73-1,298.10

Finding the Fourth Proportional to 4,219.81, 6,329.73 and 1,298.10

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Solution

The fourth proportional to 4,219.81, 6,329.73 and 1,298.10 is: 1,947.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,219.81 : 6,329.73 = 1,298.10 : x
  2. Step 2: Convert to fraction form
    4,219.81/6,329.73 = 1,298.10/x
  3. Step 3: Cross multiply
    4,219.81x = 6,329.73 × 1,298.10
  4. Step 4: Simplify right side
    4,219.81x = 8,216,622.51
  5. Step 5: Solve for x
    x = 8,216,622.51/4,219.81
  6. Step 6: Final answer
    x = 1,947.15

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Half scale
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Double scale
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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.