Home / 1,341.12-1,851.09-817.59

Finding the Fourth Proportional to 1,341.12, 1,851.09 and 817.59

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Solution

The fourth proportional to 1,341.12, 1,851.09 and 817.59 is: 1,128.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.12 : 1,851.09 = 817.59 : x
  2. Step 2: Convert to fraction form
    1,341.12/1,851.09 = 817.59/x
  3. Step 3: Cross multiply
    1,341.12x = 1,851.09 × 817.59
  4. Step 4: Simplify right side
    1,341.12x = 1,513,432.67
  5. Step 5: Solve for x
    x = 1,513,432.67/1,341.12
  6. Step 6: Final answer
    x = 1,128.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.