Home / 7,749.09-10,675.67-5,387.13

Finding the Fourth Proportional to 7,749.09, 10,675.67 and 5,387.13

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Solution

The fourth proportional to 7,749.09, 10,675.67 and 5,387.13 is: 7,421.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,749.09 : 10,675.67 = 5,387.13 : x
  2. Step 2: Convert to fraction form
    7,749.09/10,675.67 = 5,387.13/x
  3. Step 3: Cross multiply
    7,749.09x = 10,675.67 × 5,387.13
  4. Step 4: Simplify right side
    7,749.09x = 57,511,195.19
  5. Step 5: Solve for x
    x = 57,511,195.19/7,749.09
  6. Step 6: Final answer
    x = 7,421.67

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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.