Home / 7,106.40-10,659.60-3,407.76

Finding the Fourth Proportional to 7,106.40, 10,659.60 and 3,407.76

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Solution

The fourth proportional to 7,106.40, 10,659.60 and 3,407.76 is: 5,111.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,106.40 : 10,659.60 = 3,407.76 : x
  2. Step 2: Convert to fraction form
    7,106.40/10,659.60 = 3,407.76/x
  3. Step 3: Cross multiply
    7,106.40x = 10,659.60 × 3,407.76
  4. Step 4: Simplify right side
    7,106.40x = 36,325,358.50
  5. Step 5: Solve for x
    x = 36,325,358.50/7,106.40
  6. Step 6: Final answer
    x = 5,111.64

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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.