Home / 1,854.14-2,779.58-928.40

Finding the Fourth Proportional to 1,854.14, 2,779.58 and 928.40

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Solution

The fourth proportional to 1,854.14, 2,779.58 and 928.40 is: 1,391.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,854.14 : 2,779.58 = 928.40 : x
  2. Step 2: Convert to fraction form
    1,854.14/2,779.58 = 928.40/x
  3. Step 3: Cross multiply
    1,854.14x = 2,779.58 × 928.40
  4. Step 4: Simplify right side
    1,854.14x = 2,580,550.50
  5. Step 5: Solve for x
    x = 2,580,550.50/1,854.14
  6. Step 6: Final answer
    x = 1,391.78

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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.