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Finding the Fourth Proportional to 8,445.61, 12,670.70 and 3,700.90

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Solution

The fourth proportional to 8,445.61, 12,670.70 and 3,700.90 is: 5,552.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.61 : 12,670.70 = 3,700.90 : x
  2. Step 2: Convert to fraction form
    8,445.61/12,670.70 = 3,700.90/x
  3. Step 3: Cross multiply
    8,445.61x = 12,670.70 × 3,700.90
  4. Step 4: Simplify right side
    8,445.61x = 46,892,999.92
  5. Step 5: Solve for x
    x = 46,892,999.92/8,445.61
  6. Step 6: Final answer
    x = 5,552.35

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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.