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Finding the Fourth Proportional to 5,655.90, 8,491.95 and 4,278.90

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Solution

The fourth proportional to 5,655.90, 8,491.95 and 4,278.90 is: 6,424.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,655.90 : 8,491.95 = 4,278.90 : x
  2. Step 2: Convert to fraction form
    5,655.90/8,491.95 = 4,278.90/x
  3. Step 3: Cross multiply
    5,655.90x = 8,491.95 × 4,278.90
  4. Step 4: Simplify right side
    5,655.90x = 36,336,204.86
  5. Step 5: Solve for x
    x = 36,336,204.86/5,655.90
  6. Step 6: Final answer
    x = 6,424.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.