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Finding the Fourth Proportional to 5,139, 7,060.94 and 4,089.24

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Solution

The fourth proportional to 5,139, 7,060.94 and 4,089.24 is: 5,618.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139 : 7,060.94 = 4,089.24 : x
  2. Step 2: Convert to fraction form
    5,139/7,060.94 = 4,089.24/x
  3. Step 3: Cross multiply
    5,139x = 7,060.94 × 4,089.24
  4. Step 4: Simplify right side
    5,139x = 28,873,878.29
  5. Step 5: Solve for x
    x = 28,873,878.29/5,139
  6. Step 6: Final answer
    x = 5,618.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.