Home / 1,547.24-2,320.28-961.38

Finding the Fourth Proportional to 1,547.24, 2,320.28 and 961.38

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Solution

The fourth proportional to 1,547.24, 2,320.28 and 961.38 is: 1,441.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.24 : 2,320.28 = 961.38 : x
  2. Step 2: Convert to fraction form
    1,547.24/2,320.28 = 961.38/x
  3. Step 3: Cross multiply
    1,547.24x = 2,320.28 × 961.38
  4. Step 4: Simplify right side
    1,547.24x = 2,230,670.79
  5. Step 5: Solve for x
    x = 2,230,670.79/1,547.24
  6. Step 6: Final answer
    x = 1,441.71

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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.