Home / 3,421.98-5,132.95-1,113.48

Finding the Fourth Proportional to 3,421.98, 5,132.95 and 1,113.48

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Solution

The fourth proportional to 3,421.98, 5,132.95 and 1,113.48 is: 1,670.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.98 : 5,132.95 = 1,113.48 : x
  2. Step 2: Convert to fraction form
    3,421.98/5,132.95 = 1,113.48/x
  3. Step 3: Cross multiply
    3,421.98x = 5,132.95 × 1,113.48
  4. Step 4: Simplify right side
    3,421.98x = 5,715,434.38
  5. Step 5: Solve for x
    x = 5,715,434.38/3,421.98
  6. Step 6: Final answer
    x = 1,670.21

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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.