Home / 8,931.80-12,327.66-5,157.44

Finding the Fourth Proportional to 8,931.80, 12,327.66 and 5,157.44

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Solution

The fourth proportional to 8,931.80, 12,327.66 and 5,157.44 is: 7,118.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.80 : 12,327.66 = 5,157.44 : x
  2. Step 2: Convert to fraction form
    8,931.80/12,327.66 = 5,157.44/x
  3. Step 3: Cross multiply
    8,931.80x = 12,327.66 × 5,157.44
  4. Step 4: Simplify right side
    8,931.80x = 63,579,166.79
  5. Step 5: Solve for x
    x = 63,579,166.79/8,931.80
  6. Step 6: Final answer
    x = 7,118.29

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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.