Home / 8,781.39-12,118.14-4,802.40

Finding the Fourth Proportional to 8,781.39, 12,118.14 and 4,802.40

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Solution

The fourth proportional to 8,781.39, 12,118.14 and 4,802.40 is: 6,627.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.39 : 12,118.14 = 4,802.40 : x
  2. Step 2: Convert to fraction form
    8,781.39/12,118.14 = 4,802.40/x
  3. Step 3: Cross multiply
    8,781.39x = 12,118.14 × 4,802.40
  4. Step 4: Simplify right side
    8,781.39x = 58,196,155.54
  5. Step 5: Solve for x
    x = 58,196,155.54/8,781.39
  6. Step 6: Final answer
    x = 6,627.21

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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.