Home / 8,781.21-12,118.08-4,802.70

Finding the Fourth Proportional to 8,781.21, 12,118.08 and 4,802.70

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Solution

The fourth proportional to 8,781.21, 12,118.08 and 4,802.70 is: 6,627.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.21 : 12,118.08 = 4,802.70 : x
  2. Step 2: Convert to fraction form
    8,781.21/12,118.08 = 4,802.70/x
  3. Step 3: Cross multiply
    8,781.21x = 12,118.08 × 4,802.70
  4. Step 4: Simplify right side
    8,781.21x = 58,199,502.82
  5. Step 5: Solve for x
    x = 58,199,502.82/8,781.21
  6. Step 6: Final answer
    x = 6,627.73

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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.