Home / 2,776.87-4,165.85-1,315.23

Finding the Fourth Proportional to 2,776.87, 4,165.85 and 1,315.23

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Solution

The fourth proportional to 2,776.87, 4,165.85 and 1,315.23 is: 1,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.87 : 4,165.85 = 1,315.23 : x
  2. Step 2: Convert to fraction form
    2,776.87/4,165.85 = 1,315.23/x
  3. Step 3: Cross multiply
    2,776.87x = 4,165.85 × 1,315.23
  4. Step 4: Simplify right side
    2,776.87x = 5,479,050.90
  5. Step 5: Solve for x
    x = 5,479,050.90/2,776.87
  6. Step 6: Final answer
    x = 1,973.10

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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.