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Finding the Fourth Proportional to 8,937.51, 12,334.64 and 7,442.79

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Solution

The fourth proportional to 8,937.51, 12,334.64 and 7,442.79 is: 10,271.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,937.51 : 12,334.64 = 7,442.79 : x
  2. Step 2: Convert to fraction form
    8,937.51/12,334.64 = 7,442.79/x
  3. Step 3: Cross multiply
    8,937.51x = 12,334.64 × 7,442.79
  4. Step 4: Simplify right side
    8,937.51x = 91,804,098.03
  5. Step 5: Solve for x
    x = 91,804,098.03/8,937.51
  6. Step 6: Final answer
    x = 10,271.78

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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.