Home / 7,851.51-11,779.39-2,587.52

Finding the Fourth Proportional to 7,851.51, 11,779.39 and 2,587.52

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Solution

The fourth proportional to 7,851.51, 11,779.39 and 2,587.52 is: 3,881.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.51 : 11,779.39 = 2,587.52 : x
  2. Step 2: Convert to fraction form
    7,851.51/11,779.39 = 2,587.52/x
  3. Step 3: Cross multiply
    7,851.51x = 11,779.39 × 2,587.52
  4. Step 4: Simplify right side
    7,851.51x = 30,479,407.21
  5. Step 5: Solve for x
    x = 30,479,407.21/7,851.51
  6. Step 6: Final answer
    x = 3,881.98

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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.