Home / 1,313.20-1,787.41-1,313.20

Finding the Fourth Proportional to 1,313.20, 1,787.41 and 1,313.20

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Solution

The fourth proportional to 1,313.20, 1,787.41 and 1,313.20 is: 1,787.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.20 : 1,787.41 = 1,313.20 : x
  2. Step 2: Convert to fraction form
    1,313.20/1,787.41 = 1,313.20/x
  3. Step 3: Cross multiply
    1,313.20x = 1,787.41 × 1,313.20
  4. Step 4: Simplify right side
    1,313.20x = 2,347,226.81
  5. Step 5: Solve for x
    x = 2,347,226.81/1,313.20
  6. Step 6: Final answer
    x = 1,787.41

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.