Home / 2,870.20-4,305.71-1,310.20

Finding the Fourth Proportional to 2,870.20, 4,305.71 and 1,310.20

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Solution

The fourth proportional to 2,870.20, 4,305.71 and 1,310.20 is: 1,965.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.20 : 4,305.71 = 1,310.20 : x
  2. Step 2: Convert to fraction form
    2,870.20/4,305.71 = 1,310.20/x
  3. Step 3: Cross multiply
    2,870.20x = 4,305.71 × 1,310.20
  4. Step 4: Simplify right side
    2,870.20x = 5,641,341.24
  5. Step 5: Solve for x
    x = 5,641,341.24/2,870.20
  6. Step 6: Final answer
    x = 1,965.49

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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.