Home / 7,931.75-10,923.60-7,759.55

Finding the Fourth Proportional to 7,931.75, 10,923.60 and 7,759.55

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Solution

The fourth proportional to 7,931.75, 10,923.60 and 7,759.55 is: 10,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.75 : 10,923.60 = 7,759.55 : x
  2. Step 2: Convert to fraction form
    7,931.75/10,923.60 = 7,759.55/x
  3. Step 3: Cross multiply
    7,931.75x = 10,923.60 × 7,759.55
  4. Step 4: Simplify right side
    7,931.75x = 84,762,165.76
  5. Step 5: Solve for x
    x = 84,762,165.76/7,931.75
  6. Step 6: Final answer
    x = 10,686.45

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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.