Home / 2,655.09-3,982.64-707.45

Finding the Fourth Proportional to 2,655.09, 3,982.64 and 707.45

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Solution

The fourth proportional to 2,655.09, 3,982.64 and 707.45 is: 1,061.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.09 : 3,982.64 = 707.45 : x
  2. Step 2: Convert to fraction form
    2,655.09/3,982.64 = 707.45/x
  3. Step 3: Cross multiply
    2,655.09x = 3,982.64 × 707.45
  4. Step 4: Simplify right side
    2,655.09x = 2,817,495.22
  5. Step 5: Solve for x
    x = 2,817,495.22/2,655.09
  6. Step 6: Final answer
    x = 1,061.17

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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.