Home / 8,956.61-12,358.37-6,120.80

Finding the Fourth Proportional to 8,956.61, 12,358.37 and 6,120.80

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Solution

The fourth proportional to 8,956.61, 12,358.37 and 6,120.80 is: 8,445.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,956.61 : 12,358.37 = 6,120.80 : x
  2. Step 2: Convert to fraction form
    8,956.61/12,358.37 = 6,120.80/x
  3. Step 3: Cross multiply
    8,956.61x = 12,358.37 × 6,120.80
  4. Step 4: Simplify right side
    8,956.61x = 75,643,111.10
  5. Step 5: Solve for x
    x = 75,643,111.10/8,956.61
  6. Step 6: Final answer
    x = 8,445.51

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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.