Home / 7,911.93-10,923.20-4,931.80

Finding the Fourth Proportional to 7,911.93, 10,923.20 and 4,931.80

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Solution

The fourth proportional to 7,911.93, 10,923.20 and 4,931.80 is: 6,808.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.93 : 10,923.20 = 4,931.80 : x
  2. Step 2: Convert to fraction form
    7,911.93/10,923.20 = 4,931.80/x
  3. Step 3: Cross multiply
    7,911.93x = 10,923.20 × 4,931.80
  4. Step 4: Simplify right side
    7,911.93x = 53,871,037.76
  5. Step 5: Solve for x
    x = 53,871,037.76/7,911.93
  6. Step 6: Final answer
    x = 6,808.84

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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.