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Finding the Fourth Proportional to 8,713.74, 12,020.94 and 5,127.51

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Solution

The fourth proportional to 8,713.74, 12,020.94 and 5,127.51 is: 7,073.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,713.74 : 12,020.94 = 5,127.51 : x
  2. Step 2: Convert to fraction form
    8,713.74/12,020.94 = 5,127.51/x
  3. Step 3: Cross multiply
    8,713.74x = 12,020.94 × 5,127.51
  4. Step 4: Simplify right side
    8,713.74x = 61,637,490.06
  5. Step 5: Solve for x
    x = 61,637,490.06/8,713.74
  6. Step 6: Final answer
    x = 7,073.60

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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.