Home / 1,079.36-1,626.26-976.76

Finding the Fourth Proportional to 1,079.36, 1,626.26 and 976.76

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Solution

The fourth proportional to 1,079.36, 1,626.26 and 976.76 is: 1,471.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.36 : 1,626.26 = 976.76 : x
  2. Step 2: Convert to fraction form
    1,079.36/1,626.26 = 976.76/x
  3. Step 3: Cross multiply
    1,079.36x = 1,626.26 × 976.76
  4. Step 4: Simplify right side
    1,079.36x = 1,588,465.72
  5. Step 5: Solve for x
    x = 1,588,465.72/1,079.36
  6. Step 6: Final answer
    x = 1,471.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.