Home / 2,013.66-2,778.91-1,129.45

Finding the Fourth Proportional to 2,013.66, 2,778.91 and 1,129.45

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Solution

The fourth proportional to 2,013.66, 2,778.91 and 1,129.45 is: 1,558.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.66 : 2,778.91 = 1,129.45 : x
  2. Step 2: Convert to fraction form
    2,013.66/2,778.91 = 1,129.45/x
  3. Step 3: Cross multiply
    2,013.66x = 2,778.91 × 1,129.45
  4. Step 4: Simplify right side
    2,013.66x = 3,138,639.90
  5. Step 5: Solve for x
    x = 3,138,639.90/2,013.66
  6. Step 6: Final answer
    x = 1,558.67

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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.