Home / 9,988.17-13,781.41-5,738.91

Finding the Fourth Proportional to 9,988.17, 13,781.41 and 5,738.91

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Solution

The fourth proportional to 9,988.17, 13,781.41 and 5,738.91 is: 7,918.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.17 : 13,781.41 = 5,738.91 : x
  2. Step 2: Convert to fraction form
    9,988.17/13,781.41 = 5,738.91/x
  3. Step 3: Cross multiply
    9,988.17x = 13,781.41 × 5,738.91
  4. Step 4: Simplify right side
    9,988.17x = 79,090,271.66
  5. Step 5: Solve for x
    x = 79,090,271.66/9,988.17
  6. Step 6: Final answer
    x = 7,918.39

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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.