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Finding the Fourth Proportional to 7,457.40, 10,287 and 4,313.16

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Solution

The fourth proportional to 7,457.40, 10,287 and 4,313.16 is: 5,949.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,457.40 : 10,287 = 4,313.16 : x
  2. Step 2: Convert to fraction form
    7,457.40/10,287 = 4,313.16/x
  3. Step 3: Cross multiply
    7,457.40x = 10,287 × 4,313.16
  4. Step 4: Simplify right side
    7,457.40x = 44,369,476.92
  5. Step 5: Solve for x
    x = 44,369,476.92/7,457.40
  6. Step 6: Final answer
    x = 5,949.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.