Home / 2,387.40-3,579.81-926.16

Finding the Fourth Proportional to 2,387.40, 3,579.81 and 926.16

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Solution

The fourth proportional to 2,387.40, 3,579.81 and 926.16 is: 1,388.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.40 : 3,579.81 = 926.16 : x
  2. Step 2: Convert to fraction form
    2,387.40/3,579.81 = 926.16/x
  3. Step 3: Cross multiply
    2,387.40x = 3,579.81 × 926.16
  4. Step 4: Simplify right side
    2,387.40x = 3,315,476.83
  5. Step 5: Solve for x
    x = 3,315,476.83/2,387.40
  6. Step 6: Final answer
    x = 1,388.74

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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.