Home / 7,830.54-11,731.10-3,877.20

Finding the Fourth Proportional to 7,830.54, 11,731.10 and 3,877.20

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Solution

The fourth proportional to 7,830.54, 11,731.10 and 3,877.20 is: 5,808.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.54 : 11,731.10 = 3,877.20 : x
  2. Step 2: Convert to fraction form
    7,830.54/11,731.10 = 3,877.20/x
  3. Step 3: Cross multiply
    7,830.54x = 11,731.10 × 3,877.20
  4. Step 4: Simplify right side
    7,830.54x = 45,483,801.53
  5. Step 5: Solve for x
    x = 45,483,801.53/7,830.54
  6. Step 6: Final answer
    x = 5,808.51

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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.