Home / 1,562.42-2,155.90-899.15

Finding the Fourth Proportional to 1,562.42, 2,155.90 and 899.15

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Solution

The fourth proportional to 1,562.42, 2,155.90 and 899.15 is: 1,240.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.42 : 2,155.90 = 899.15 : x
  2. Step 2: Convert to fraction form
    1,562.42/2,155.90 = 899.15/x
  3. Step 3: Cross multiply
    1,562.42x = 2,155.90 × 899.15
  4. Step 4: Simplify right side
    1,562.42x = 1,938,475.24
  5. Step 5: Solve for x
    x = 1,938,475.24/1,562.42
  6. Step 6: Final answer
    x = 1,240.68

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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.