Home / 8,695.15-12,000.56-5,157.68

Finding the Fourth Proportional to 8,695.15, 12,000.56 and 5,157.68

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Solution

The fourth proportional to 8,695.15, 12,000.56 and 5,157.68 is: 7,118.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.15 : 12,000.56 = 5,157.68 : x
  2. Step 2: Convert to fraction form
    8,695.15/12,000.56 = 5,157.68/x
  3. Step 3: Cross multiply
    8,695.15x = 12,000.56 × 5,157.68
  4. Step 4: Simplify right side
    8,695.15x = 61,894,962.51
  5. Step 5: Solve for x
    x = 61,894,962.51/8,695.15
  6. Step 6: Final answer
    x = 7,118.33

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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.