Home / 4,750.40-7,125.32-1,287.38

Finding the Fourth Proportional to 4,750.40, 7,125.32 and 1,287.38

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Solution

The fourth proportional to 4,750.40, 7,125.32 and 1,287.38 is: 1,930.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,750.40 : 7,125.32 = 1,287.38 : x
  2. Step 2: Convert to fraction form
    4,750.40/7,125.32 = 1,287.38/x
  3. Step 3: Cross multiply
    4,750.40x = 7,125.32 × 1,287.38
  4. Step 4: Simplify right side
    4,750.40x = 9,172,994.46
  5. Step 5: Solve for x
    x = 9,172,994.46/4,750.40
  6. Step 6: Final answer
    x = 1,930.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.