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Finding the Fourth Proportional to 8,908.88, 12,293.03 and 5,130.63

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Solution

The fourth proportional to 8,908.88, 12,293.03 and 5,130.63 is: 7,079.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.88 : 12,293.03 = 5,130.63 : x
  2. Step 2: Convert to fraction form
    8,908.88/12,293.03 = 5,130.63/x
  3. Step 3: Cross multiply
    8,908.88x = 12,293.03 × 5,130.63
  4. Step 4: Simplify right side
    8,908.88x = 63,071,001.34
  5. Step 5: Solve for x
    x = 63,071,001.34/8,908.88
  6. Step 6: Final answer
    x = 7,079.57

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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.