Home / 7,730.12-11,595.20-5,138.12

Finding the Fourth Proportional to 7,730.12, 11,595.20 and 5,138.12

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Solution

The fourth proportional to 7,730.12, 11,595.20 and 5,138.12 is: 7,707.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,730.12 : 11,595.20 = 5,138.12 : x
  2. Step 2: Convert to fraction form
    7,730.12/11,595.20 = 5,138.12/x
  3. Step 3: Cross multiply
    7,730.12x = 11,595.20 × 5,138.12
  4. Step 4: Simplify right side
    7,730.12x = 59,577,529.02
  5. Step 5: Solve for x
    x = 59,577,529.02/7,730.12
  6. Step 6: Final answer
    x = 7,707.19

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1.5x scale

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.