Home / 5,155.30-7,113.88-3,030.90

Finding the Fourth Proportional to 5,155.30, 7,113.88 and 3,030.90

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Solution

The fourth proportional to 5,155.30, 7,113.88 and 3,030.90 is: 4,182.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.30 : 7,113.88 = 3,030.90 : x
  2. Step 2: Convert to fraction form
    5,155.30/7,113.88 = 3,030.90/x
  3. Step 3: Cross multiply
    5,155.30x = 7,113.88 × 3,030.90
  4. Step 4: Simplify right side
    5,155.30x = 21,561,408.17
  5. Step 5: Solve for x
    x = 21,561,408.17/5,155.30
  6. Step 6: Final answer
    x = 4,182.38

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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.