Home / 6,478.20-8,938.38-3,685.24

Finding the Fourth Proportional to 6,478.20, 8,938.38 and 3,685.24

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Solution

The fourth proportional to 6,478.20, 8,938.38 and 3,685.24 is: 5,084.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.20 : 8,938.38 = 3,685.24 : x
  2. Step 2: Convert to fraction form
    6,478.20/8,938.38 = 3,685.24/x
  3. Step 3: Cross multiply
    6,478.20x = 8,938.38 × 3,685.24
  4. Step 4: Simplify right side
    6,478.20x = 32,940,075.51
  5. Step 5: Solve for x
    x = 32,940,075.51/6,478.20
  6. Step 6: Final answer
    x = 5,084.76

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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.