Home / 2,059.65-2,842.32-1,115.45

Finding the Fourth Proportional to 2,059.65, 2,842.32 and 1,115.45

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Solution

The fourth proportional to 2,059.65, 2,842.32 and 1,115.45 is: 1,539.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,059.65 : 2,842.32 = 1,115.45 : x
  2. Step 2: Convert to fraction form
    2,059.65/2,842.32 = 1,115.45/x
  3. Step 3: Cross multiply
    2,059.65x = 2,842.32 × 1,115.45
  4. Step 4: Simplify right side
    2,059.65x = 3,170,474.11
  5. Step 5: Solve for x
    x = 3,170,474.11/2,059.65
  6. Step 6: Final answer
    x = 1,539.32

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Half scale
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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.