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Finding the Fourth Proportional to 5,581.98, 7,690.95 and 3,715.74

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Solution

The fourth proportional to 5,581.98, 7,690.95 and 3,715.74 is: 5,119.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.98 : 7,690.95 = 3,715.74 : x
  2. Step 2: Convert to fraction form
    5,581.98/7,690.95 = 3,715.74/x
  3. Step 3: Cross multiply
    5,581.98x = 7,690.95 × 3,715.74
  4. Step 4: Simplify right side
    5,581.98x = 28,577,570.55
  5. Step 5: Solve for x
    x = 28,577,570.55/5,581.98
  6. Step 6: Final answer
    x = 5,119.61

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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.