Home / 6,213.40-9,315.18-4,259.80

Finding the Fourth Proportional to 6,213.40, 9,315.18 and 4,259.80

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Solution

The fourth proportional to 6,213.40, 9,315.18 and 4,259.80 is: 6,386.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,213.40 : 9,315.18 = 4,259.80 : x
  2. Step 2: Convert to fraction form
    6,213.40/9,315.18 = 4,259.80/x
  3. Step 3: Cross multiply
    6,213.40x = 9,315.18 × 4,259.80
  4. Step 4: Simplify right side
    6,213.40x = 39,680,803.76
  5. Step 5: Solve for x
    x = 39,680,803.76/6,213.40
  6. Step 6: Final answer
    x = 6,386.33

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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.