Home / 1,815.35-2,505.13-1,069.35

Finding the Fourth Proportional to 1,815.35, 2,505.13 and 1,069.35

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Solution

The fourth proportional to 1,815.35, 2,505.13 and 1,069.35 is: 1,475.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.35 : 2,505.13 = 1,069.35 : x
  2. Step 2: Convert to fraction form
    1,815.35/2,505.13 = 1,069.35/x
  3. Step 3: Cross multiply
    1,815.35x = 2,505.13 × 1,069.35
  4. Step 4: Simplify right side
    1,815.35x = 2,678,862.79
  5. Step 5: Solve for x
    x = 2,678,862.79/1,815.35
  6. Step 6: Final answer
    x = 1,475.68

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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.