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Finding the Fourth Proportional to 7,605.95, 10,503.45 and 7,191.77

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Solution

The fourth proportional to 7,605.95, 10,503.45 and 7,191.77 is: 9,931.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,605.95 : 10,503.45 = 7,191.77 : x
  2. Step 2: Convert to fraction form
    7,605.95/10,503.45 = 7,191.77/x
  3. Step 3: Cross multiply
    7,605.95x = 10,503.45 × 7,191.77
  4. Step 4: Simplify right side
    7,605.95x = 75,538,344.09
  5. Step 5: Solve for x
    x = 75,538,344.09/7,605.95
  6. Step 6: Final answer
    x = 9,931.49

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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.