Home / 2,705.13-4,058.78-1,145.48

Finding the Fourth Proportional to 2,705.13, 4,058.78 and 1,145.48

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Solution

The fourth proportional to 2,705.13, 4,058.78 and 1,145.48 is: 1,718.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.13 : 4,058.78 = 1,145.48 : x
  2. Step 2: Convert to fraction form
    2,705.13/4,058.78 = 1,145.48/x
  3. Step 3: Cross multiply
    2,705.13x = 4,058.78 × 1,145.48
  4. Step 4: Simplify right side
    2,705.13x = 4,649,225.29
  5. Step 5: Solve for x
    x = 4,649,225.29/2,705.13
  6. Step 6: Final answer
    x = 1,718.67

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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.