Home / 2,931.65-4,047.55-2,616.36

Finding the Fourth Proportional to 2,931.65, 4,047.55 and 2,616.36

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Solution

The fourth proportional to 2,931.65, 4,047.55 and 2,616.36 is: 3,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.65 : 4,047.55 = 2,616.36 : x
  2. Step 2: Convert to fraction form
    2,931.65/4,047.55 = 2,616.36/x
  3. Step 3: Cross multiply
    2,931.65x = 4,047.55 × 2,616.36
  4. Step 4: Simplify right side
    2,931.65x = 10,589,847.92
  5. Step 5: Solve for x
    x = 10,589,847.92/2,931.65
  6. Step 6: Final answer
    x = 3,612.25

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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.