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Finding the Fourth Proportional to 7,835.35, 10,813 and 4,478.71

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Solution

The fourth proportional to 7,835.35, 10,813 and 4,478.71 is: 6,180.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,835.35 : 10,813 = 4,478.71 : x
  2. Step 2: Convert to fraction form
    7,835.35/10,813 = 4,478.71/x
  3. Step 3: Cross multiply
    7,835.35x = 10,813 × 4,478.71
  4. Step 4: Simplify right side
    7,835.35x = 48,428,291.23
  5. Step 5: Solve for x
    x = 48,428,291.23/7,835.35
  6. Step 6: Final answer
    x = 6,180.74

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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.