Home / 1,440.13-2,160.70-710.22

Finding the Fourth Proportional to 1,440.13, 2,160.70 and 710.22

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Solution

The fourth proportional to 1,440.13, 2,160.70 and 710.22 is: 1,065.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.13 : 2,160.70 = 710.22 : x
  2. Step 2: Convert to fraction form
    1,440.13/2,160.70 = 710.22/x
  3. Step 3: Cross multiply
    1,440.13x = 2,160.70 × 710.22
  4. Step 4: Simplify right side
    1,440.13x = 1,534,572.35
  5. Step 5: Solve for x
    x = 1,534,572.35/1,440.13
  6. Step 6: Final answer
    x = 1,065.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.