Home / 4,212.40-6,315.90-1,748.20

Finding the Fourth Proportional to 4,212.40, 6,315.90 and 1,748.20

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Solution

The fourth proportional to 4,212.40, 6,315.90 and 1,748.20 is: 2,621.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.40 : 6,315.90 = 1,748.20 : x
  2. Step 2: Convert to fraction form
    4,212.40/6,315.90 = 1,748.20/x
  3. Step 3: Cross multiply
    4,212.40x = 6,315.90 × 1,748.20
  4. Step 4: Simplify right side
    4,212.40x = 11,041,456.38
  5. Step 5: Solve for x
    x = 11,041,456.38/4,212.40
  6. Step 6: Final answer
    x = 2,621.18

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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.