Home / 2,739.13-4,109.28-890.10

Finding the Fourth Proportional to 2,739.13, 4,109.28 and 890.10

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Solution

The fourth proportional to 2,739.13, 4,109.28 and 890.10 is: 1,335.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.13 : 4,109.28 = 890.10 : x
  2. Step 2: Convert to fraction form
    2,739.13/4,109.28 = 890.10/x
  3. Step 3: Cross multiply
    2,739.13x = 4,109.28 × 890.10
  4. Step 4: Simplify right side
    2,739.13x = 3,657,670.13
  5. Step 5: Solve for x
    x = 3,657,670.13/2,739.13
  6. Step 6: Final answer
    x = 1,335.34

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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.