Home / 1,563.13-2,157.11-864.50

Finding the Fourth Proportional to 1,563.13, 2,157.11 and 864.50

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Solution

The fourth proportional to 1,563.13, 2,157.11 and 864.50 is: 1,193.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.13 : 2,157.11 = 864.50 : x
  2. Step 2: Convert to fraction form
    1,563.13/2,157.11 = 864.50/x
  3. Step 3: Cross multiply
    1,563.13x = 2,157.11 × 864.50
  4. Step 4: Simplify right side
    1,563.13x = 1,864,821.60
  5. Step 5: Solve for x
    x = 1,864,821.60/1,563.13
  6. Step 6: Final answer
    x = 1,193.00

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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.