Home / 5,105.61-7,048.55-3,089.40

Finding the Fourth Proportional to 5,105.61, 7,048.55 and 3,089.40

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Solution

The fourth proportional to 5,105.61, 7,048.55 and 3,089.40 is: 4,265.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.61 : 7,048.55 = 3,089.40 : x
  2. Step 2: Convert to fraction form
    5,105.61/7,048.55 = 3,089.40/x
  3. Step 3: Cross multiply
    5,105.61x = 7,048.55 × 3,089.40
  4. Step 4: Simplify right side
    5,105.61x = 21,775,774.92
  5. Step 5: Solve for x
    x = 21,775,774.92/5,105.61
  6. Step 6: Final answer
    x = 4,265.07

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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.