Home / 1,567.80-2,346.21-1,239.75

Finding the Fourth Proportional to 1,567.80, 2,346.21 and 1,239.75

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Solution

The fourth proportional to 1,567.80, 2,346.21 and 1,239.75 is: 1,855.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.80 : 2,346.21 = 1,239.75 : x
  2. Step 2: Convert to fraction form
    1,567.80/2,346.21 = 1,239.75/x
  3. Step 3: Cross multiply
    1,567.80x = 2,346.21 × 1,239.75
  4. Step 4: Simplify right side
    1,567.80x = 2,908,713.85
  5. Step 5: Solve for x
    x = 2,908,713.85/1,567.80
  6. Step 6: Final answer
    x = 1,855.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.