Home / 5,570.40-8,355.60-3,820.80

Finding the Fourth Proportional to 5,570.40, 8,355.60 and 3,820.80

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Solution

The fourth proportional to 5,570.40, 8,355.60 and 3,820.80 is: 5,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,570.40 : 8,355.60 = 3,820.80 : x
  2. Step 2: Convert to fraction form
    5,570.40/8,355.60 = 3,820.80/x
  3. Step 3: Cross multiply
    5,570.40x = 8,355.60 × 3,820.80
  4. Step 4: Simplify right side
    5,570.40x = 31,925,076.48
  5. Step 5: Solve for x
    x = 31,925,076.48/5,570.40
  6. Step 6: Final answer
    x = 5,731.20

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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.