Home / 9,990.63-14,988.42-3,417.12

Finding the Fourth Proportional to 9,990.63, 14,988.42 and 3,417.12

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Solution

The fourth proportional to 9,990.63, 14,988.42 and 3,417.12 is: 5,126.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.63 : 14,988.42 = 3,417.12 : x
  2. Step 2: Convert to fraction form
    9,990.63/14,988.42 = 3,417.12/x
  3. Step 3: Cross multiply
    9,990.63x = 14,988.42 × 3,417.12
  4. Step 4: Simplify right side
    9,990.63x = 51,217,229.75
  5. Step 5: Solve for x
    x = 51,217,229.75/9,990.63
  6. Step 6: Final answer
    x = 5,126.53

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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.