Home / 2,445.18-3,668.40-864.30

Finding the Fourth Proportional to 2,445.18, 3,668.40 and 864.30

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Solution

The fourth proportional to 2,445.18, 3,668.40 and 864.30 is: 1,296.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,445.18 : 3,668.40 = 864.30 : x
  2. Step 2: Convert to fraction form
    2,445.18/3,668.40 = 864.30/x
  3. Step 3: Cross multiply
    2,445.18x = 3,668.40 × 864.30
  4. Step 4: Simplify right side
    2,445.18x = 3,170,598.12
  5. Step 5: Solve for x
    x = 3,170,598.12/2,445.18
  6. Step 6: Final answer
    x = 1,296.67

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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.