Home / 1,540.25-2,125.59-841.67

Finding the Fourth Proportional to 1,540.25, 2,125.59 and 841.67

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Solution

The fourth proportional to 1,540.25, 2,125.59 and 841.67 is: 1,161.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.25 : 2,125.59 = 841.67 : x
  2. Step 2: Convert to fraction form
    1,540.25/2,125.59 = 841.67/x
  3. Step 3: Cross multiply
    1,540.25x = 2,125.59 × 841.67
  4. Step 4: Simplify right side
    1,540.25x = 1,789,045.34
  5. Step 5: Solve for x
    x = 1,789,045.34/1,540.25
  6. Step 6: Final answer
    x = 1,161.53

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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.