Home / 2,812.28-3,880.56-1,693.68

Finding the Fourth Proportional to 2,812.28, 3,880.56 and 1,693.68

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Solution

The fourth proportional to 2,812.28, 3,880.56 and 1,693.68 is: 2,337.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.28 : 3,880.56 = 1,693.68 : x
  2. Step 2: Convert to fraction form
    2,812.28/3,880.56 = 1,693.68/x
  3. Step 3: Cross multiply
    2,812.28x = 3,880.56 × 1,693.68
  4. Step 4: Simplify right side
    2,812.28x = 6,572,426.86
  5. Step 5: Solve for x
    x = 6,572,426.86/2,812.28
  6. Step 6: Final answer
    x = 2,337.05

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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.