Home / 8,885.78-13,330.47-2,645.90

Finding the Fourth Proportional to 8,885.78, 13,330.47 and 2,645.90

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Solution

The fourth proportional to 8,885.78, 13,330.47 and 2,645.90 is: 3,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,885.78 : 13,330.47 = 2,645.90 : x
  2. Step 2: Convert to fraction form
    8,885.78/13,330.47 = 2,645.90/x
  3. Step 3: Cross multiply
    8,885.78x = 13,330.47 × 2,645.90
  4. Step 4: Simplify right side
    8,885.78x = 35,271,090.57
  5. Step 5: Solve for x
    x = 35,271,090.57/8,885.78
  6. Step 6: Final answer
    x = 3,969.39

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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.