Home / 8,957.90-12,361.51-5,180.46

Finding the Fourth Proportional to 8,957.90, 12,361.51 and 5,180.46

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Solution

The fourth proportional to 8,957.90, 12,361.51 and 5,180.46 is: 7,148.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.90 : 12,361.51 = 5,180.46 : x
  2. Step 2: Convert to fraction form
    8,957.90/12,361.51 = 5,180.46/x
  3. Step 3: Cross multiply
    8,957.90x = 12,361.51 × 5,180.46
  4. Step 4: Simplify right side
    8,957.90x = 64,038,308.09
  5. Step 5: Solve for x
    x = 64,038,308.09/8,957.90
  6. Step 6: Final answer
    x = 7,148.81

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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.