Home / 7,740.34-11,610.50-3,120.10

Finding the Fourth Proportional to 7,740.34, 11,610.50 and 3,120.10

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Solution

The fourth proportional to 7,740.34, 11,610.50 and 3,120.10 is: 4,680.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.34 : 11,610.50 = 3,120.10 : x
  2. Step 2: Convert to fraction form
    7,740.34/11,610.50 = 3,120.10/x
  3. Step 3: Cross multiply
    7,740.34x = 11,610.50 × 3,120.10
  4. Step 4: Simplify right side
    7,740.34x = 36,225,899.82
  5. Step 5: Solve for x
    x = 36,225,899.82/7,740.34
  6. Step 6: Final answer
    x = 4,680.14

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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.