Home / 7,911.68-10,922.85-4,931.55

Finding the Fourth Proportional to 7,911.68, 10,922.85 and 4,931.55

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Solution

The fourth proportional to 7,911.68, 10,922.85 and 4,931.55 is: 6,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.68 : 10,922.85 = 4,931.55 : x
  2. Step 2: Convert to fraction form
    7,911.68/10,922.85 = 4,931.55/x
  3. Step 3: Cross multiply
    7,911.68x = 10,922.85 × 4,931.55
  4. Step 4: Simplify right side
    7,911.68x = 53,866,593.25
  5. Step 5: Solve for x
    x = 53,866,593.25/7,911.68
  6. Step 6: Final answer
    x = 6,808.49

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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.