Home / 1,547.36-2,312.54-1,131.76

Finding the Fourth Proportional to 1,547.36, 2,312.54 and 1,131.76

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Solution

The fourth proportional to 1,547.36, 2,312.54 and 1,131.76 is: 1,691.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.36 : 2,312.54 = 1,131.76 : x
  2. Step 2: Convert to fraction form
    1,547.36/2,312.54 = 1,131.76/x
  3. Step 3: Cross multiply
    1,547.36x = 2,312.54 × 1,131.76
  4. Step 4: Simplify right side
    1,547.36x = 2,617,237.50
  5. Step 5: Solve for x
    x = 2,617,237.50/1,547.36
  6. Step 6: Final answer
    x = 1,691.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.