Home / 1,562.94-2,157.21-899.91

Finding the Fourth Proportional to 1,562.94, 2,157.21 and 899.91

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Solution

The fourth proportional to 1,562.94, 2,157.21 and 899.91 is: 1,242.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.94 : 2,157.21 = 899.91 : x
  2. Step 2: Convert to fraction form
    1,562.94/2,157.21 = 899.91/x
  3. Step 3: Cross multiply
    1,562.94x = 2,157.21 × 899.91
  4. Step 4: Simplify right side
    1,562.94x = 1,941,294.85
  5. Step 5: Solve for x
    x = 1,941,294.85/1,562.94
  6. Step 6: Final answer
    x = 1,242.08

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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.