Home / 9,277.20-12,778.56-7,592.40

Finding the Fourth Proportional to 9,277.20, 12,778.56 and 7,592.40

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Solution

The fourth proportional to 9,277.20, 12,778.56 and 7,592.40 is: 10,457.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,277.20 : 12,778.56 = 7,592.40 : x
  2. Step 2: Convert to fraction form
    9,277.20/12,778.56 = 7,592.40/x
  3. Step 3: Cross multiply
    9,277.20x = 12,778.56 × 7,592.40
  4. Step 4: Simplify right side
    9,277.20x = 97,019,938.94
  5. Step 5: Solve for x
    x = 97,019,938.94/9,277.20
  6. Step 6: Final answer
    x = 10,457.89

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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.