Home / 1,567.20-2,157.80-1,192.98

Finding the Fourth Proportional to 1,567.20, 2,157.80 and 1,192.98

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Solution

The fourth proportional to 1,567.20, 2,157.80 and 1,192.98 is: 1,642.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.20 : 2,157.80 = 1,192.98 : x
  2. Step 2: Convert to fraction form
    1,567.20/2,157.80 = 1,192.98/x
  3. Step 3: Cross multiply
    1,567.20x = 2,157.80 × 1,192.98
  4. Step 4: Simplify right side
    1,567.20x = 2,574,212.24
  5. Step 5: Solve for x
    x = 2,574,212.24/1,567.20
  6. Step 6: Final answer
    x = 1,642.56

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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.