Home / 8,781.06-12,117.78-4,802.13

Finding the Fourth Proportional to 8,781.06, 12,117.78 and 4,802.13

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Solution

The fourth proportional to 8,781.06, 12,117.78 and 4,802.13 is: 6,626.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.06 : 12,117.78 = 4,802.13 : x
  2. Step 2: Convert to fraction form
    8,781.06/12,117.78 = 4,802.13/x
  3. Step 3: Cross multiply
    8,781.06x = 12,117.78 × 4,802.13
  4. Step 4: Simplify right side
    8,781.06x = 58,191,154.87
  5. Step 5: Solve for x
    x = 58,191,154.87/8,781.06
  6. Step 6: Final answer
    x = 6,626.89

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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.