Home / 5,615.70-8,425.49-1,920.53

Finding the Fourth Proportional to 5,615.70, 8,425.49 and 1,920.53

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Solution

The fourth proportional to 5,615.70, 8,425.49 and 1,920.53 is: 2,881.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.70 : 8,425.49 = 1,920.53 : x
  2. Step 2: Convert to fraction form
    5,615.70/8,425.49 = 1,920.53/x
  3. Step 3: Cross multiply
    5,615.70x = 8,425.49 × 1,920.53
  4. Step 4: Simplify right side
    5,615.70x = 16,181,354.58
  5. Step 5: Solve for x
    x = 16,181,354.58/5,615.70
  6. Step 6: Final answer
    x = 2,881.45

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1.5x scale

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.