Home / 1,540.24-2,125.56-841.64

Finding the Fourth Proportional to 1,540.24, 2,125.56 and 841.64

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Solution

The fourth proportional to 1,540.24, 2,125.56 and 841.64 is: 1,161.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.24 : 2,125.56 = 841.64 : x
  2. Step 2: Convert to fraction form
    1,540.24/2,125.56 = 841.64/x
  3. Step 3: Cross multiply
    1,540.24x = 2,125.56 × 841.64
  4. Step 4: Simplify right side
    1,540.24x = 1,788,956.32
  5. Step 5: Solve for x
    x = 1,788,956.32/1,540.24
  6. Step 6: Final answer
    x = 1,161.48

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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.