Home / 6,090.40-8,400.90-3,851.56

Finding the Fourth Proportional to 6,090.40, 8,400.90 and 3,851.56

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Solution

The fourth proportional to 6,090.40, 8,400.90 and 3,851.56 is: 5,312.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,090.40 : 8,400.90 = 3,851.56 : x
  2. Step 2: Convert to fraction form
    6,090.40/8,400.90 = 3,851.56/x
  3. Step 3: Cross multiply
    6,090.40x = 8,400.90 × 3,851.56
  4. Step 4: Simplify right side
    6,090.40x = 32,356,570.40
  5. Step 5: Solve for x
    x = 32,356,570.40/6,090.40
  6. Step 6: Final answer
    x = 5,312.72

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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.