Home / 9,354.40-12,909.84-5,376.16

Finding the Fourth Proportional to 9,354.40, 12,909.84 and 5,376.16

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Solution

The fourth proportional to 9,354.40, 12,909.84 and 5,376.16 is: 7,419.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,354.40 : 12,909.84 = 5,376.16 : x
  2. Step 2: Convert to fraction form
    9,354.40/12,909.84 = 5,376.16/x
  3. Step 3: Cross multiply
    9,354.40x = 12,909.84 × 5,376.16
  4. Step 4: Simplify right side
    9,354.40x = 69,405,365.41
  5. Step 5: Solve for x
    x = 69,405,365.41/9,354.40
  6. Step 6: Final answer
    x = 7,419.54

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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.