Home / 1,554.49-2,145.55-1,396.85

Finding the Fourth Proportional to 1,554.49, 2,145.55 and 1,396.85

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Solution

The fourth proportional to 1,554.49, 2,145.55 and 1,396.85 is: 1,927.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.49 : 2,145.55 = 1,396.85 : x
  2. Step 2: Convert to fraction form
    1,554.49/2,145.55 = 1,396.85/x
  3. Step 3: Cross multiply
    1,554.49x = 2,145.55 × 1,396.85
  4. Step 4: Simplify right side
    1,554.49x = 2,997,011.52
  5. Step 5: Solve for x
    x = 2,997,011.52/1,554.49
  6. Step 6: Final answer
    x = 1,927.97

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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.