Home / 7,374.89-10,167.40-7,145.57

Finding the Fourth Proportional to 7,374.89, 10,167.40 and 7,145.57

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Solution

The fourth proportional to 7,374.89, 10,167.40 and 7,145.57 is: 9,851.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,374.89 : 10,167.40 = 7,145.57 : x
  2. Step 2: Convert to fraction form
    7,374.89/10,167.40 = 7,145.57/x
  3. Step 3: Cross multiply
    7,374.89x = 10,167.40 × 7,145.57
  4. Step 4: Simplify right side
    7,374.89x = 72,651,875.97
  5. Step 5: Solve for x
    x = 72,651,875.97/7,374.89
  6. Step 6: Final answer
    x = 9,851.25

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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.