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Finding the Fourth Proportional to 7,605.56, 10,498.74 and 6,432.68

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Solution

The fourth proportional to 7,605.56, 10,498.74 and 6,432.68 is: 8,879.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,605.56 : 10,498.74 = 6,432.68 : x
  2. Step 2: Convert to fraction form
    7,605.56/10,498.74 = 6,432.68/x
  3. Step 3: Cross multiply
    7,605.56x = 10,498.74 × 6,432.68
  4. Step 4: Simplify right side
    7,605.56x = 67,535,034.82
  5. Step 5: Solve for x
    x = 67,535,034.82/7,605.56
  6. Step 6: Final answer
    x = 8,879.69

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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.