Home / 1,864.80-2,573.40-1,078.86

Finding the Fourth Proportional to 1,864.80, 2,573.40 and 1,078.86

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Solution

The fourth proportional to 1,864.80, 2,573.40 and 1,078.86 is: 1,488.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.80 : 2,573.40 = 1,078.86 : x
  2. Step 2: Convert to fraction form
    1,864.80/2,573.40 = 1,078.86/x
  3. Step 3: Cross multiply
    1,864.80x = 2,573.40 × 1,078.86
  4. Step 4: Simplify right side
    1,864.80x = 2,776,338.32
  5. Step 5: Solve for x
    x = 2,776,338.32/1,864.80
  6. Step 6: Final answer
    x = 1,488.81

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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.