Home / 8,690.29-11,990.59-5,862.91

Finding the Fourth Proportional to 8,690.29, 11,990.59 and 5,862.91

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Solution

The fourth proportional to 8,690.29, 11,990.59 and 5,862.91 is: 8,089.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.29 : 11,990.59 = 5,862.91 : x
  2. Step 2: Convert to fraction form
    8,690.29/11,990.59 = 5,862.91/x
  3. Step 3: Cross multiply
    8,690.29x = 11,990.59 × 5,862.91
  4. Step 4: Simplify right side
    8,690.29x = 70,299,750.02
  5. Step 5: Solve for x
    x = 70,299,750.02/8,690.29
  6. Step 6: Final answer
    x = 8,089.46

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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.