Home / 1,425.62-2,138.02-904.83

Finding the Fourth Proportional to 1,425.62, 2,138.02 and 904.83

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Solution

The fourth proportional to 1,425.62, 2,138.02 and 904.83 is: 1,356.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.62 : 2,138.02 = 904.83 : x
  2. Step 2: Convert to fraction form
    1,425.62/2,138.02 = 904.83/x
  3. Step 3: Cross multiply
    1,425.62x = 2,138.02 × 904.83
  4. Step 4: Simplify right side
    1,425.62x = 1,934,542.37
  5. Step 5: Solve for x
    x = 1,934,542.37/1,425.62
  6. Step 6: Final answer
    x = 1,356.99

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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.