Home / 1,437.20-2,156.07-615.45

Finding the Fourth Proportional to 1,437.20, 2,156.07 and 615.45

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Solution

The fourth proportional to 1,437.20, 2,156.07 and 615.45 is: 923.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.20 : 2,156.07 = 615.45 : x
  2. Step 2: Convert to fraction form
    1,437.20/2,156.07 = 615.45/x
  3. Step 3: Cross multiply
    1,437.20x = 2,156.07 × 615.45
  4. Step 4: Simplify right side
    1,437.20x = 1,326,953.28
  5. Step 5: Solve for x
    x = 1,326,953.28/1,437.20
  6. Step 6: Final answer
    x = 923.29

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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.