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Finding the Fourth Proportional to 8,434.70, 12,657.45 and 4,924.70

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Solution

The fourth proportional to 8,434.70, 12,657.45 and 4,924.70 is: 7,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,434.70 : 12,657.45 = 4,924.70 : x
  2. Step 2: Convert to fraction form
    8,434.70/12,657.45 = 4,924.70/x
  3. Step 3: Cross multiply
    8,434.70x = 12,657.45 × 4,924.70
  4. Step 4: Simplify right side
    8,434.70x = 62,334,144.02
  5. Step 5: Solve for x
    x = 62,334,144.02/8,434.70
  6. Step 6: Final answer
    x = 7,390.20

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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.