Home / 1,547.01-2,320.65-767.79

Finding the Fourth Proportional to 1,547.01, 2,320.65 and 767.79

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Solution

The fourth proportional to 1,547.01, 2,320.65 and 767.79 is: 1,151.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.01 : 2,320.65 = 767.79 : x
  2. Step 2: Convert to fraction form
    1,547.01/2,320.65 = 767.79/x
  3. Step 3: Cross multiply
    1,547.01x = 2,320.65 × 767.79
  4. Step 4: Simplify right side
    1,547.01x = 1,781,771.86
  5. Step 5: Solve for x
    x = 1,781,771.86/1,547.01
  6. Step 6: Final answer
    x = 1,151.75

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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.