Home / 7,812.40-10,781.76-4,668.52

Finding the Fourth Proportional to 7,812.40, 10,781.76 and 4,668.52

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Solution

The fourth proportional to 7,812.40, 10,781.76 and 4,668.52 is: 6,442.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.40 : 10,781.76 = 4,668.52 : x
  2. Step 2: Convert to fraction form
    7,812.40/10,781.76 = 4,668.52/x
  3. Step 3: Cross multiply
    7,812.40x = 10,781.76 × 4,668.52
  4. Step 4: Simplify right side
    7,812.40x = 50,334,862.20
  5. Step 5: Solve for x
    x = 50,334,862.20/7,812.40
  6. Step 6: Final answer
    x = 6,442.94

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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.