Home / 1,547.09-2,317.94-1,288.76

Finding the Fourth Proportional to 1,547.09, 2,317.94 and 1,288.76

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Solution

The fourth proportional to 1,547.09, 2,317.94 and 1,288.76 is: 1,930.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.09 : 2,317.94 = 1,288.76 : x
  2. Step 2: Convert to fraction form
    1,547.09/2,317.94 = 1,288.76/x
  3. Step 3: Cross multiply
    1,547.09x = 2,317.94 × 1,288.76
  4. Step 4: Simplify right side
    1,547.09x = 2,987,250.32
  5. Step 5: Solve for x
    x = 2,987,250.32/1,547.09
  6. Step 6: Final answer
    x = 1,930.88

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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.