Home / 8,225.28-12,339.36-3,031.20

Finding the Fourth Proportional to 8,225.28, 12,339.36 and 3,031.20

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Solution

The fourth proportional to 8,225.28, 12,339.36 and 3,031.20 is: 4,547.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,225.28 : 12,339.36 = 3,031.20 : x
  2. Step 2: Convert to fraction form
    8,225.28/12,339.36 = 3,031.20/x
  3. Step 3: Cross multiply
    8,225.28x = 12,339.36 × 3,031.20
  4. Step 4: Simplify right side
    8,225.28x = 37,403,068.03
  5. Step 5: Solve for x
    x = 37,403,068.03/8,225.28
  6. Step 6: Final answer
    x = 4,547.33

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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.