Home / 1,437.95-2,155.11-615.40

Finding the Fourth Proportional to 1,437.95, 2,155.11 and 615.40

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Solution

The fourth proportional to 1,437.95, 2,155.11 and 615.40 is: 922.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.95 : 2,155.11 = 615.40 : x
  2. Step 2: Convert to fraction form
    1,437.95/2,155.11 = 615.40/x
  3. Step 3: Cross multiply
    1,437.95x = 2,155.11 × 615.40
  4. Step 4: Simplify right side
    1,437.95x = 1,326,247.00
  5. Step 5: Solve for x
    x = 1,326,247.00/1,437.95
  6. Step 6: Final answer
    x = 922.32

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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.