Home / 2,918.55-4,377.80-1,685.18

Finding the Fourth Proportional to 2,918.55, 4,377.80 and 1,685.18

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Solution

The fourth proportional to 2,918.55, 4,377.80 and 1,685.18 is: 2,527.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.55 : 4,377.80 = 1,685.18 : x
  2. Step 2: Convert to fraction form
    2,918.55/4,377.80 = 1,685.18/x
  3. Step 3: Cross multiply
    2,918.55x = 4,377.80 × 1,685.18
  4. Step 4: Simplify right side
    2,918.55x = 7,377,350.69
  5. Step 5: Solve for x
    x = 7,377,350.69/2,918.55
  6. Step 6: Final answer
    x = 2,527.75

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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.