Home / 1,561.08-2,153.88-1,001.34

Finding the Fourth Proportional to 1,561.08, 2,153.88 and 1,001.34

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Solution

The fourth proportional to 1,561.08, 2,153.88 and 1,001.34 is: 1,381.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.08 : 2,153.88 = 1,001.34 : x
  2. Step 2: Convert to fraction form
    1,561.08/2,153.88 = 1,001.34/x
  3. Step 3: Cross multiply
    1,561.08x = 2,153.88 × 1,001.34
  4. Step 4: Simplify right side
    1,561.08x = 2,156,766.20
  5. Step 5: Solve for x
    x = 2,156,766.20/1,561.08
  6. Step 6: Final answer
    x = 1,381.59

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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.