Home / 3,113.40-4,285.26-2,180.28

Finding the Fourth Proportional to 3,113.40, 4,285.26 and 2,180.28

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Solution

The fourth proportional to 3,113.40, 4,285.26 and 2,180.28 is: 3,000.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.40 : 4,285.26 = 2,180.28 : x
  2. Step 2: Convert to fraction form
    3,113.40/4,285.26 = 2,180.28/x
  3. Step 3: Cross multiply
    3,113.40x = 4,285.26 × 2,180.28
  4. Step 4: Simplify right side
    3,113.40x = 9,343,066.67
  5. Step 5: Solve for x
    x = 9,343,066.67/3,113.40
  6. Step 6: Final answer
    x = 3,000.92

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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.