Home / 9,877.88-13,631.48-5,686.13

Finding the Fourth Proportional to 9,877.88, 13,631.48 and 5,686.13

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Solution

The fourth proportional to 9,877.88, 13,631.48 and 5,686.13 is: 7,846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,877.88 : 13,631.48 = 5,686.13 : x
  2. Step 2: Convert to fraction form
    9,877.88/13,631.48 = 5,686.13/x
  3. Step 3: Cross multiply
    9,877.88x = 13,631.48 × 5,686.13
  4. Step 4: Simplify right side
    9,877.88x = 77,510,270.78
  5. Step 5: Solve for x
    x = 77,510,270.78/9,877.88
  6. Step 6: Final answer
    x = 7,846.86

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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.