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Finding the Fourth Proportional to 7,499.40, 10,349.80 and 4,355.40

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Solution

The fourth proportional to 7,499.40, 10,349.80 and 4,355.40 is: 6,010.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,499.40 : 10,349.80 = 4,355.40 : x
  2. Step 2: Convert to fraction form
    7,499.40/10,349.80 = 4,355.40/x
  3. Step 3: Cross multiply
    7,499.40x = 10,349.80 × 4,355.40
  4. Step 4: Simplify right side
    7,499.40x = 45,077,518.92
  5. Step 5: Solve for x
    x = 45,077,518.92/7,499.40
  6. Step 6: Final answer
    x = 6,010.82

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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.