Home / 7,938.18-10,929.74-6,740.64

Finding the Fourth Proportional to 7,938.18, 10,929.74 and 6,740.64

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Solution

The fourth proportional to 7,938.18, 10,929.74 and 6,740.64 is: 9,280.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.18 : 10,929.74 = 6,740.64 : x
  2. Step 2: Convert to fraction form
    7,938.18/10,929.74 = 6,740.64/x
  3. Step 3: Cross multiply
    7,938.18x = 10,929.74 × 6,740.64
  4. Step 4: Simplify right side
    7,938.18x = 73,673,408.93
  5. Step 5: Solve for x
    x = 73,673,408.93/7,938.18
  6. Step 6: Final answer
    x = 9,280.89

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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.