Home / 7,771.89-10,720.49-4,972.53

Finding the Fourth Proportional to 7,771.89, 10,720.49 and 4,972.53

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Solution

The fourth proportional to 7,771.89, 10,720.49 and 4,972.53 is: 6,859.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771.89 : 10,720.49 = 4,972.53 : x
  2. Step 2: Convert to fraction form
    7,771.89/10,720.49 = 4,972.53/x
  3. Step 3: Cross multiply
    7,771.89x = 10,720.49 × 4,972.53
  4. Step 4: Simplify right side
    7,771.89x = 53,307,933.28
  5. Step 5: Solve for x
    x = 53,307,933.28/7,771.89
  6. Step 6: Final answer
    x = 6,859.07

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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.