Home / 1,685.80-2,528.70-1,503.55

Finding the Fourth Proportional to 1,685.80, 2,528.70 and 1,503.55

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Solution

The fourth proportional to 1,685.80, 2,528.70 and 1,503.55 is: 2,255.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.80 : 2,528.70 = 1,503.55 : x
  2. Step 2: Convert to fraction form
    1,685.80/2,528.70 = 1,503.55/x
  3. Step 3: Cross multiply
    1,685.80x = 2,528.70 × 1,503.55
  4. Step 4: Simplify right side
    1,685.80x = 3,802,026.89
  5. Step 5: Solve for x
    x = 3,802,026.89/1,685.80
  6. Step 6: Final answer
    x = 2,255.33

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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.