Home / 8,781.61-12,118.62-4,802.72

Finding the Fourth Proportional to 8,781.61, 12,118.62 and 4,802.72

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Solution

The fourth proportional to 8,781.61, 12,118.62 and 4,802.72 is: 6,627.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.61 : 12,118.62 = 4,802.72 : x
  2. Step 2: Convert to fraction form
    8,781.61/12,118.62 = 4,802.72/x
  3. Step 3: Cross multiply
    8,781.61x = 12,118.62 × 4,802.72
  4. Step 4: Simplify right side
    8,781.61x = 58,202,254.04
  5. Step 5: Solve for x
    x = 58,202,254.04/8,781.61
  6. Step 6: Final answer
    x = 6,627.75

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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.