Home / 1,563.32-2,157.22-973.92

Finding the Fourth Proportional to 1,563.32, 2,157.22 and 973.92

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Solution

The fourth proportional to 1,563.32, 2,157.22 and 973.92 is: 1,343.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.32 : 2,157.22 = 973.92 : x
  2. Step 2: Convert to fraction form
    1,563.32/2,157.22 = 973.92/x
  3. Step 3: Cross multiply
    1,563.32x = 2,157.22 × 973.92
  4. Step 4: Simplify right side
    1,563.32x = 2,100,959.70
  5. Step 5: Solve for x
    x = 2,100,959.70/1,563.32
  6. Step 6: Final answer
    x = 1,343.91

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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.