Home / 1,779.28-2,455.84-1,080.48

Finding the Fourth Proportional to 1,779.28, 2,455.84 and 1,080.48

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Solution

The fourth proportional to 1,779.28, 2,455.84 and 1,080.48 is: 1,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.28 : 2,455.84 = 1,080.48 : x
  2. Step 2: Convert to fraction form
    1,779.28/2,455.84 = 1,080.48/x
  3. Step 3: Cross multiply
    1,779.28x = 2,455.84 × 1,080.48
  4. Step 4: Simplify right side
    1,779.28x = 2,653,486.00
  5. Step 5: Solve for x
    x = 2,653,486.00/1,779.28
  6. Step 6: Final answer
    x = 1,491.33

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1.5x scale

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.