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Finding the Fourth Proportional to 8,878.79, 12,254.87 and 5,341.31

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Solution

The fourth proportional to 8,878.79, 12,254.87 and 5,341.31 is: 7,372.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.79 : 12,254.87 = 5,341.31 : x
  2. Step 2: Convert to fraction form
    8,878.79/12,254.87 = 5,341.31/x
  3. Step 3: Cross multiply
    8,878.79x = 12,254.87 × 5,341.31
  4. Step 4: Simplify right side
    8,878.79x = 65,457,103.67
  5. Step 5: Solve for x
    x = 65,457,103.67/8,878.79
  6. Step 6: Final answer
    x = 7,372.30

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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.