Home / 1,507.76-2,079.48-1,087.28

Finding the Fourth Proportional to 1,507.76, 2,079.48 and 1,087.28

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Solution

The fourth proportional to 1,507.76, 2,079.48 and 1,087.28 is: 1,499.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.76 : 2,079.48 = 1,087.28 : x
  2. Step 2: Convert to fraction form
    1,507.76/2,079.48 = 1,087.28/x
  3. Step 3: Cross multiply
    1,507.76x = 2,079.48 × 1,087.28
  4. Step 4: Simplify right side
    1,507.76x = 2,260,977.01
  5. Step 5: Solve for x
    x = 2,260,977.01/1,507.76
  6. Step 6: Final answer
    x = 1,499.56

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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.