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Finding the Fourth Proportional to 5,673.35, 7,828.76 and 3,155.46

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Solution

The fourth proportional to 5,673.35, 7,828.76 and 3,155.46 is: 4,354.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,673.35 : 7,828.76 = 3,155.46 : x
  2. Step 2: Convert to fraction form
    5,673.35/7,828.76 = 3,155.46/x
  3. Step 3: Cross multiply
    5,673.35x = 7,828.76 × 3,155.46
  4. Step 4: Simplify right side
    5,673.35x = 24,703,323.25
  5. Step 5: Solve for x
    x = 24,703,323.25/5,673.35
  6. Step 6: Final answer
    x = 4,354.28

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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.