Home / 9,330.40-12,875.84-5,138.56

Finding the Fourth Proportional to 9,330.40, 12,875.84 and 5,138.56

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Solution

The fourth proportional to 9,330.40, 12,875.84 and 5,138.56 is: 7,091.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,330.40 : 12,875.84 = 5,138.56 : x
  2. Step 2: Convert to fraction form
    9,330.40/12,875.84 = 5,138.56/x
  3. Step 3: Cross multiply
    9,330.40x = 12,875.84 × 5,138.56
  4. Step 4: Simplify right side
    9,330.40x = 66,163,276.39
  5. Step 5: Solve for x
    x = 66,163,276.39/9,330.40
  6. Step 6: Final answer
    x = 7,091.15

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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.