Home / 5,521.60-8,258.40-4,940.80

Finding the Fourth Proportional to 5,521.60, 8,258.40 and 4,940.80

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Solution

The fourth proportional to 5,521.60, 8,258.40 and 4,940.80 is: 7,389.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.60 : 8,258.40 = 4,940.80 : x
  2. Step 2: Convert to fraction form
    5,521.60/8,258.40 = 4,940.80/x
  3. Step 3: Cross multiply
    5,521.60x = 8,258.40 × 4,940.80
  4. Step 4: Simplify right side
    5,521.60x = 40,803,102.72
  5. Step 5: Solve for x
    x = 40,803,102.72/5,521.60
  6. Step 6: Final answer
    x = 7,389.72

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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.