Home / 1,538.14-2,307.72-660.28

Finding the Fourth Proportional to 1,538.14, 2,307.72 and 660.28

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Solution

The fourth proportional to 1,538.14, 2,307.72 and 660.28 is: 990.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.14 : 2,307.72 = 660.28 : x
  2. Step 2: Convert to fraction form
    1,538.14/2,307.72 = 660.28/x
  3. Step 3: Cross multiply
    1,538.14x = 2,307.72 × 660.28
  4. Step 4: Simplify right side
    1,538.14x = 1,523,741.36
  5. Step 5: Solve for x
    x = 1,523,741.36/1,538.14
  6. Step 6: Final answer
    x = 990.64

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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.