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Finding the Fourth Proportional to 7,894.34, 10,894.35 and 4,357.54

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Solution

The fourth proportional to 7,894.34, 10,894.35 and 4,357.54 is: 6,013.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894.34 : 10,894.35 = 4,357.54 : x
  2. Step 2: Convert to fraction form
    7,894.34/10,894.35 = 4,357.54/x
  3. Step 3: Cross multiply
    7,894.34x = 10,894.35 × 4,357.54
  4. Step 4: Simplify right side
    7,894.34x = 47,472,565.90
  5. Step 5: Solve for x
    x = 47,472,565.90/7,894.34
  6. Step 6: Final answer
    x = 6,013.49

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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.