Home / 1,779.54-2,455.38-1,071.30

Finding the Fourth Proportional to 1,779.54, 2,455.38 and 1,071.30

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Solution

The fourth proportional to 1,779.54, 2,455.38 and 1,071.30 is: 1,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.54 : 2,455.38 = 1,071.30 : x
  2. Step 2: Convert to fraction form
    1,779.54/2,455.38 = 1,071.30/x
  3. Step 3: Cross multiply
    1,779.54x = 2,455.38 × 1,071.30
  4. Step 4: Simplify right side
    1,779.54x = 2,630,448.59
  5. Step 5: Solve for x
    x = 2,630,448.59/1,779.54
  6. Step 6: Final answer
    x = 1,478.16

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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.