Home / 4,890.40-7,330.20-2,811.40

Finding the Fourth Proportional to 4,890.40, 7,330.20 and 2,811.40

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Solution

The fourth proportional to 4,890.40, 7,330.20 and 2,811.40 is: 4,214.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.40 : 7,330.20 = 2,811.40 : x
  2. Step 2: Convert to fraction form
    4,890.40/7,330.20 = 2,811.40/x
  3. Step 3: Cross multiply
    4,890.40x = 7,330.20 × 2,811.40
  4. Step 4: Simplify right side
    4,890.40x = 20,608,124.28
  5. Step 5: Solve for x
    x = 20,608,124.28/4,890.40
  6. Step 6: Final answer
    x = 4,214.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.