Home / 8,687.07-11,987.87-5,148.18

Finding the Fourth Proportional to 8,687.07, 11,987.87 and 5,148.18

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Solution

The fourth proportional to 8,687.07, 11,987.87 and 5,148.18 is: 7,104.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.07 : 11,987.87 = 5,148.18 : x
  2. Step 2: Convert to fraction form
    8,687.07/11,987.87 = 5,148.18/x
  3. Step 3: Cross multiply
    8,687.07x = 11,987.87 × 5,148.18
  4. Step 4: Simplify right side
    8,687.07x = 61,715,686.84
  5. Step 5: Solve for x
    x = 61,715,686.84/8,687.07
  6. Step 6: Final answer
    x = 7,104.32

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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.