Home / 8,957.72-12,360.67-5,180.32

Finding the Fourth Proportional to 8,957.72, 12,360.67 and 5,180.32

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Solution

The fourth proportional to 8,957.72, 12,360.67 and 5,180.32 is: 7,148.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.72 : 12,360.67 = 5,180.32 : x
  2. Step 2: Convert to fraction form
    8,957.72/12,360.67 = 5,180.32/x
  3. Step 3: Cross multiply
    8,957.72x = 12,360.67 × 5,180.32
  4. Step 4: Simplify right side
    8,957.72x = 64,032,226.01
  5. Step 5: Solve for x
    x = 64,032,226.01/8,957.72
  6. Step 6: Final answer
    x = 7,148.27

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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.