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Finding the Fourth Proportional to 2,386.28, 3,580.48 and 925.55

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Solution

The fourth proportional to 2,386.28, 3,580.48 and 925.55 is: 1,388.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.28 : 3,580.48 = 925.55 : x
  2. Step 2: Convert to fraction form
    2,386.28/3,580.48 = 925.55/x
  3. Step 3: Cross multiply
    2,386.28x = 3,580.48 × 925.55
  4. Step 4: Simplify right side
    2,386.28x = 3,313,895.36
  5. Step 5: Solve for x
    x = 3,313,895.36/2,386.28
  6. Step 6: Final answer
    x = 1,388.73

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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.