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Finding the Fourth Proportional to 1,686.96, 2,530.43 and 713.07

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Solution

The fourth proportional to 1,686.96, 2,530.43 and 713.07 is: 1,069.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.96 : 2,530.43 = 713.07 : x
  2. Step 2: Convert to fraction form
    1,686.96/2,530.43 = 713.07/x
  3. Step 3: Cross multiply
    1,686.96x = 2,530.43 × 713.07
  4. Step 4: Simplify right side
    1,686.96x = 1,804,373.72
  5. Step 5: Solve for x
    x = 1,804,373.72/1,686.96
  6. Step 6: Final answer
    x = 1,069.60

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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.