Home / 1,779.13-2,455.42-1,071.34

Finding the Fourth Proportional to 1,779.13, 2,455.42 and 1,071.34

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Solution

The fourth proportional to 1,779.13, 2,455.42 and 1,071.34 is: 1,478.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.13 : 2,455.42 = 1,071.34 : x
  2. Step 2: Convert to fraction form
    1,779.13/2,455.42 = 1,071.34/x
  3. Step 3: Cross multiply
    1,779.13x = 2,455.42 × 1,071.34
  4. Step 4: Simplify right side
    1,779.13x = 2,630,589.66
  5. Step 5: Solve for x
    x = 2,630,589.66/1,779.13
  6. Step 6: Final answer
    x = 1,478.58

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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.