Home / 1,240.12-1,707.48-1,053.24

Finding the Fourth Proportional to 1,240.12, 1,707.48 and 1,053.24

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Solution

The fourth proportional to 1,240.12, 1,707.48 and 1,053.24 is: 1,450.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.12 : 1,707.48 = 1,053.24 : x
  2. Step 2: Convert to fraction form
    1,240.12/1,707.48 = 1,053.24/x
  3. Step 3: Cross multiply
    1,240.12x = 1,707.48 × 1,053.24
  4. Step 4: Simplify right side
    1,240.12x = 1,798,386.24
  5. Step 5: Solve for x
    x = 1,798,386.24/1,240.12
  6. Step 6: Final answer
    x = 1,450.17

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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.