Home / 3,130.38-4,317.30-3,091.50

Finding the Fourth Proportional to 3,130.38, 4,317.30 and 3,091.50

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Solution

The fourth proportional to 3,130.38, 4,317.30 and 3,091.50 is: 4,263.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.38 : 4,317.30 = 3,091.50 : x
  2. Step 2: Convert to fraction form
    3,130.38/4,317.30 = 3,091.50/x
  3. Step 3: Cross multiply
    3,130.38x = 4,317.30 × 3,091.50
  4. Step 4: Simplify right side
    3,130.38x = 13,346,932.95
  5. Step 5: Solve for x
    x = 13,346,932.95/3,130.38
  6. Step 6: Final answer
    x = 4,263.68

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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.