Home / 1,561.43-2,154.40-1,064.34

Finding the Fourth Proportional to 1,561.43, 2,154.40 and 1,064.34

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Solution

The fourth proportional to 1,561.43, 2,154.40 and 1,064.34 is: 1,468.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.43 : 2,154.40 = 1,064.34 : x
  2. Step 2: Convert to fraction form
    1,561.43/2,154.40 = 1,064.34/x
  3. Step 3: Cross multiply
    1,561.43x = 2,154.40 × 1,064.34
  4. Step 4: Simplify right side
    1,561.43x = 2,293,011.44
  5. Step 5: Solve for x
    x = 2,293,011.44/1,561.43
  6. Step 6: Final answer
    x = 1,468.54

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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.