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Finding the Fourth Proportional to 7,894.12, 10,893.28 and 4,357.32

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Solution

The fourth proportional to 7,894.12, 10,893.28 and 4,357.32 is: 6,012.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894.12 : 10,893.28 = 4,357.32 : x
  2. Step 2: Convert to fraction form
    7,894.12/10,893.28 = 4,357.32/x
  3. Step 3: Cross multiply
    7,894.12x = 10,893.28 × 4,357.32
  4. Step 4: Simplify right side
    7,894.12x = 47,465,506.81
  5. Step 5: Solve for x
    x = 47,465,506.81/7,894.12
  6. Step 6: Final answer
    x = 6,012.77

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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.