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Finding the Fourth Proportional to 8,637.95, 12,936.16 and 4,928.93

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Solution

The fourth proportional to 8,637.95, 12,936.16 and 4,928.93 is: 7,381.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637.95 : 12,936.16 = 4,928.93 : x
  2. Step 2: Convert to fraction form
    8,637.95/12,936.16 = 4,928.93/x
  3. Step 3: Cross multiply
    8,637.95x = 12,936.16 × 4,928.93
  4. Step 4: Simplify right side
    8,637.95x = 63,761,447.13
  5. Step 5: Solve for x
    x = 63,761,447.13/8,637.95
  6. Step 6: Final answer
    x = 7,381.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.