Home / 1,778.40-2,666.64-1,559.52

Finding the Fourth Proportional to 1,778.40, 2,666.64 and 1,559.52

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Solution

The fourth proportional to 1,778.40, 2,666.64 and 1,559.52 is: 2,338.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.40 : 2,666.64 = 1,559.52 : x
  2. Step 2: Convert to fraction form
    1,778.40/2,666.64 = 1,559.52/x
  3. Step 3: Cross multiply
    1,778.40x = 2,666.64 × 1,559.52
  4. Step 4: Simplify right side
    1,778.40x = 4,158,678.41
  5. Step 5: Solve for x
    x = 4,158,678.41/1,778.40
  6. Step 6: Final answer
    x = 2,338.44

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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.