Home / 7,239.12-10,862.28-2,859.72

Finding the Fourth Proportional to 7,239.12, 10,862.28 and 2,859.72

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Solution

The fourth proportional to 7,239.12, 10,862.28 and 2,859.72 is: 4,291.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.12 : 10,862.28 = 2,859.72 : x
  2. Step 2: Convert to fraction form
    7,239.12/10,862.28 = 2,859.72/x
  3. Step 3: Cross multiply
    7,239.12x = 10,862.28 × 2,859.72
  4. Step 4: Simplify right side
    7,239.12x = 31,063,079.36
  5. Step 5: Solve for x
    x = 31,063,079.36/7,239.12
  6. Step 6: Final answer
    x = 4,291.00

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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.