Home / 2,864.20-3,953.46-2,079.40

Finding the Fourth Proportional to 2,864.20, 3,953.46 and 2,079.40

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Solution

The fourth proportional to 2,864.20, 3,953.46 and 2,079.40 is: 2,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864.20 : 3,953.46 = 2,079.40 : x
  2. Step 2: Convert to fraction form
    2,864.20/3,953.46 = 2,079.40/x
  3. Step 3: Cross multiply
    2,864.20x = 3,953.46 × 2,079.40
  4. Step 4: Simplify right side
    2,864.20x = 8,220,824.72
  5. Step 5: Solve for x
    x = 8,220,824.72/2,864.20
  6. Step 6: Final answer
    x = 2,870.20

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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.