Home / 1,431.18-2,147.10-565.50

Finding the Fourth Proportional to 1,431.18, 2,147.10 and 565.50

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Solution

The fourth proportional to 1,431.18, 2,147.10 and 565.50 is: 848.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.18 : 2,147.10 = 565.50 : x
  2. Step 2: Convert to fraction form
    1,431.18/2,147.10 = 565.50/x
  3. Step 3: Cross multiply
    1,431.18x = 2,147.10 × 565.50
  4. Step 4: Simplify right side
    1,431.18x = 1,214,185.05
  5. Step 5: Solve for x
    x = 1,214,185.05/1,431.18
  6. Step 6: Final answer
    x = 848.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.