Home / 1,685.21-2,527.05-710.78

Finding the Fourth Proportional to 1,685.21, 2,527.05 and 710.78

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Solution

The fourth proportional to 1,685.21, 2,527.05 and 710.78 is: 1,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.21 : 2,527.05 = 710.78 : x
  2. Step 2: Convert to fraction form
    1,685.21/2,527.05 = 710.78/x
  3. Step 3: Cross multiply
    1,685.21x = 2,527.05 × 710.78
  4. Step 4: Simplify right side
    1,685.21x = 1,796,176.60
  5. Step 5: Solve for x
    x = 1,796,176.60/1,685.21
  6. Step 6: Final answer
    x = 1,065.85

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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.