Home / 7,207.28-10,820.64-3,312.80

Finding the Fourth Proportional to 7,207.28, 10,820.64 and 3,312.80

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Solution

The fourth proportional to 7,207.28, 10,820.64 and 3,312.80 is: 4,973.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,207.28 : 10,820.64 = 3,312.80 : x
  2. Step 2: Convert to fraction form
    7,207.28/10,820.64 = 3,312.80/x
  3. Step 3: Cross multiply
    7,207.28x = 10,820.64 × 3,312.80
  4. Step 4: Simplify right side
    7,207.28x = 35,846,616.19
  5. Step 5: Solve for x
    x = 35,846,616.19/7,207.28
  6. Step 6: Final answer
    x = 4,973.67

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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.