Home / 3,989.10-5,506.95-3,090.84

Finding the Fourth Proportional to 3,989.10, 5,506.95 and 3,090.84

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Solution

The fourth proportional to 3,989.10, 5,506.95 and 3,090.84 is: 4,266.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.10 : 5,506.95 = 3,090.84 : x
  2. Step 2: Convert to fraction form
    3,989.10/5,506.95 = 3,090.84/x
  3. Step 3: Cross multiply
    3,989.10x = 5,506.95 × 3,090.84
  4. Step 4: Simplify right side
    3,989.10x = 17,021,101.34
  5. Step 5: Solve for x
    x = 17,021,101.34/3,989.10
  6. Step 6: Final answer
    x = 4,266.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.