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Finding the Fourth Proportional to 8,935.51, 12,387.48 and 8,461.53

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Solution

The fourth proportional to 8,935.51, 12,387.48 and 8,461.53 is: 11,730.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.51 : 12,387.48 = 8,461.53 : x
  2. Step 2: Convert to fraction form
    8,935.51/12,387.48 = 8,461.53/x
  3. Step 3: Cross multiply
    8,935.51x = 12,387.48 × 8,461.53
  4. Step 4: Simplify right side
    8,935.51x = 104,817,033.64
  5. Step 5: Solve for x
    x = 104,817,033.64/8,935.51
  6. Step 6: Final answer
    x = 11,730.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.