Home / 1,705.50-2,352.68-1,145.02

Finding the Fourth Proportional to 1,705.50, 2,352.68 and 1,145.02

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Solution

The fourth proportional to 1,705.50, 2,352.68 and 1,145.02 is: 1,579.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.50 : 2,352.68 = 1,145.02 : x
  2. Step 2: Convert to fraction form
    1,705.50/2,352.68 = 1,145.02/x
  3. Step 3: Cross multiply
    1,705.50x = 2,352.68 × 1,145.02
  4. Step 4: Simplify right side
    1,705.50x = 2,693,865.65
  5. Step 5: Solve for x
    x = 2,693,865.65/1,705.50
  6. Step 6: Final answer
    x = 1,579.52

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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.