Home / 4,378.80-6,042.68-2,389.30

Finding the Fourth Proportional to 4,378.80, 6,042.68 and 2,389.30

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Solution

The fourth proportional to 4,378.80, 6,042.68 and 2,389.30 is: 3,297.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,378.80 : 6,042.68 = 2,389.30 : x
  2. Step 2: Convert to fraction form
    4,378.80/6,042.68 = 2,389.30/x
  3. Step 3: Cross multiply
    4,378.80x = 6,042.68 × 2,389.30
  4. Step 4: Simplify right side
    4,378.80x = 14,437,775.32
  5. Step 5: Solve for x
    x = 14,437,775.32/4,378.80
  6. Step 6: Final answer
    x = 3,297.20

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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.