Home / 1,425.16-2,139.11-695.25

Finding the Fourth Proportional to 1,425.16, 2,139.11 and 695.25

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Solution

The fourth proportional to 1,425.16, 2,139.11 and 695.25 is: 1,043.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.16 : 2,139.11 = 695.25 : x
  2. Step 2: Convert to fraction form
    1,425.16/2,139.11 = 695.25/x
  3. Step 3: Cross multiply
    1,425.16x = 2,139.11 × 695.25
  4. Step 4: Simplify right side
    1,425.16x = 1,487,216.23
  5. Step 5: Solve for x
    x = 1,487,216.23/1,425.16
  6. Step 6: Final answer
    x = 1,043.54

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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.