Home / 1,512.52-2,087.34-923.20

Finding the Fourth Proportional to 1,512.52, 2,087.34 and 923.20

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Solution

The fourth proportional to 1,512.52, 2,087.34 and 923.20 is: 1,274.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.52 : 2,087.34 = 923.20 : x
  2. Step 2: Convert to fraction form
    1,512.52/2,087.34 = 923.20/x
  3. Step 3: Cross multiply
    1,512.52x = 2,087.34 × 923.20
  4. Step 4: Simplify right side
    1,512.52x = 1,927,032.29
  5. Step 5: Solve for x
    x = 1,927,032.29/1,512.52
  6. Step 6: Final answer
    x = 1,274.05

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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.