Home / 1,395.11-2,090.84-572.55

Finding the Fourth Proportional to 1,395.11, 2,090.84 and 572.55

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Solution

The fourth proportional to 1,395.11, 2,090.84 and 572.55 is: 858.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.11 : 2,090.84 = 572.55 : x
  2. Step 2: Convert to fraction form
    1,395.11/2,090.84 = 572.55/x
  3. Step 3: Cross multiply
    1,395.11x = 2,090.84 × 572.55
  4. Step 4: Simplify right side
    1,395.11x = 1,197,107.58
  5. Step 5: Solve for x
    x = 1,197,107.58/1,395.11
  6. Step 6: Final answer
    x = 858.08

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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.