Home / 7,423.95-11,121.58-5,078.40

Finding the Fourth Proportional to 7,423.95, 11,121.58 and 5,078.40

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Solution

The fourth proportional to 7,423.95, 11,121.58 and 5,078.40 is: 7,607.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,423.95 : 11,121.58 = 5,078.40 : x
  2. Step 2: Convert to fraction form
    7,423.95/11,121.58 = 5,078.40/x
  3. Step 3: Cross multiply
    7,423.95x = 11,121.58 × 5,078.40
  4. Step 4: Simplify right side
    7,423.95x = 56,479,782.23
  5. Step 5: Solve for x
    x = 56,479,782.23/7,423.95
  6. Step 6: Final answer
    x = 7,607.78

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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.