Home / 7,191.80-9,925.36-4,207.45

Finding the Fourth Proportional to 7,191.80, 9,925.36 and 4,207.45

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Solution

The fourth proportional to 7,191.80, 9,925.36 and 4,207.45 is: 5,806.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.80 : 9,925.36 = 4,207.45 : x
  2. Step 2: Convert to fraction form
    7,191.80/9,925.36 = 4,207.45/x
  3. Step 3: Cross multiply
    7,191.80x = 9,925.36 × 4,207.45
  4. Step 4: Simplify right side
    7,191.80x = 41,760,420.60
  5. Step 5: Solve for x
    x = 41,760,420.60/7,191.80
  6. Step 6: Final answer
    x = 5,806.67

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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.