Home / 9,765.40-13,476.28-5,289.20

Finding the Fourth Proportional to 9,765.40, 13,476.28 and 5,289.20

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Solution

The fourth proportional to 9,765.40, 13,476.28 and 5,289.20 is: 7,299.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,765.40 : 13,476.28 = 5,289.20 : x
  2. Step 2: Convert to fraction form
    9,765.40/13,476.28 = 5,289.20/x
  3. Step 3: Cross multiply
    9,765.40x = 13,476.28 × 5,289.20
  4. Step 4: Simplify right side
    9,765.40x = 71,278,740.18
  5. Step 5: Solve for x
    x = 71,278,740.18/9,765.40
  6. Step 6: Final answer
    x = 7,299.11

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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.