Home / 1,225.91-1,686.75-1,059.59

Finding the Fourth Proportional to 1,225.91, 1,686.75 and 1,059.59

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Solution

The fourth proportional to 1,225.91, 1,686.75 and 1,059.59 is: 1,457.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.91 : 1,686.75 = 1,059.59 : x
  2. Step 2: Convert to fraction form
    1,225.91/1,686.75 = 1,059.59/x
  3. Step 3: Cross multiply
    1,225.91x = 1,686.75 × 1,059.59
  4. Step 4: Simplify right side
    1,225.91x = 1,787,263.43
  5. Step 5: Solve for x
    x = 1,787,263.43/1,225.91
  6. Step 6: Final answer
    x = 1,457.91

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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.