Home / 8,587.18-12,869.34-5,621.86

Finding the Fourth Proportional to 8,587.18, 12,869.34 and 5,621.86

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Solution

The fourth proportional to 8,587.18, 12,869.34 and 5,621.86 is: 8,425.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.18 : 12,869.34 = 5,621.86 : x
  2. Step 2: Convert to fraction form
    8,587.18/12,869.34 = 5,621.86/x
  3. Step 3: Cross multiply
    8,587.18x = 12,869.34 × 5,621.86
  4. Step 4: Simplify right side
    8,587.18x = 72,349,627.77
  5. Step 5: Solve for x
    x = 72,349,627.77/8,587.18
  6. Step 6: Final answer
    x = 8,425.31

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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.