Home / 2,276.16-3,140.53-1,391.64

Finding the Fourth Proportional to 2,276.16, 3,140.53 and 1,391.64

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Solution

The fourth proportional to 2,276.16, 3,140.53 and 1,391.64 is: 1,920.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.16 : 3,140.53 = 1,391.64 : x
  2. Step 2: Convert to fraction form
    2,276.16/3,140.53 = 1,391.64/x
  3. Step 3: Cross multiply
    2,276.16x = 3,140.53 × 1,391.64
  4. Step 4: Simplify right side
    2,276.16x = 4,370,487.17
  5. Step 5: Solve for x
    x = 4,370,487.17/2,276.16
  6. Step 6: Final answer
    x = 1,920.11

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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.