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Finding the Fourth Proportional to 9,988.63, 14,985.93 and 2,968.87

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Solution

The fourth proportional to 9,988.63, 14,985.93 and 2,968.87 is: 4,454.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.63 : 14,985.93 = 2,968.87 : x
  2. Step 2: Convert to fraction form
    9,988.63/14,985.93 = 2,968.87/x
  3. Step 3: Cross multiply
    9,988.63x = 14,985.93 × 2,968.87
  4. Step 4: Simplify right side
    9,988.63x = 44,491,278.00
  5. Step 5: Solve for x
    x = 44,491,278.00/9,988.63
  6. Step 6: Final answer
    x = 4,454.19

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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.