Home / 1,561.79-2,157.04-1,063.56

Finding the Fourth Proportional to 1,561.79, 2,157.04 and 1,063.56

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Solution

The fourth proportional to 1,561.79, 2,157.04 and 1,063.56 is: 1,468.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.79 : 2,157.04 = 1,063.56 : x
  2. Step 2: Convert to fraction form
    1,561.79/2,157.04 = 1,063.56/x
  3. Step 3: Cross multiply
    1,561.79x = 2,157.04 × 1,063.56
  4. Step 4: Simplify right side
    1,561.79x = 2,294,137.47
  5. Step 5: Solve for x
    x = 2,294,137.47/1,561.79
  6. Step 6: Final answer
    x = 1,468.92

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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.