Home / 1,265.65-1,746.78-1,055.53

Finding the Fourth Proportional to 1,265.65, 1,746.78 and 1,055.53

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Solution

The fourth proportional to 1,265.65, 1,746.78 and 1,055.53 is: 1,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.65 : 1,746.78 = 1,055.53 : x
  2. Step 2: Convert to fraction form
    1,265.65/1,746.78 = 1,055.53/x
  3. Step 3: Cross multiply
    1,265.65x = 1,746.78 × 1,055.53
  4. Step 4: Simplify right side
    1,265.65x = 1,843,778.69
  5. Step 5: Solve for x
    x = 1,843,778.69/1,265.65
  6. Step 6: Final answer
    x = 1,456.78

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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.