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Finding the Fourth Proportional to 7,482.78, 10,328.85 and 4,831.11

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Solution

The fourth proportional to 7,482.78, 10,328.85 and 4,831.11 is: 6,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,482.78 : 10,328.85 = 4,831.11 : x
  2. Step 2: Convert to fraction form
    7,482.78/10,328.85 = 4,831.11/x
  3. Step 3: Cross multiply
    7,482.78x = 10,328.85 × 4,831.11
  4. Step 4: Simplify right side
    7,482.78x = 49,899,810.52
  5. Step 5: Solve for x
    x = 49,899,810.52/7,482.78
  6. Step 6: Final answer
    x = 6,668.62

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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.