Home / 3,615.53-4,988.87-2,123.31

Finding the Fourth Proportional to 3,615.53, 4,988.87 and 2,123.31

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Solution

The fourth proportional to 3,615.53, 4,988.87 and 2,123.31 is: 2,929.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.53 : 4,988.87 = 2,123.31 : x
  2. Step 2: Convert to fraction form
    3,615.53/4,988.87 = 2,123.31/x
  3. Step 3: Cross multiply
    3,615.53x = 4,988.87 × 2,123.31
  4. Step 4: Simplify right side
    3,615.53x = 10,592,910.40
  5. Step 5: Solve for x
    x = 10,592,910.40/3,615.53
  6. Step 6: Final answer
    x = 2,929.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.