Home / 1,313.74-1,814.34-1,176.40

Finding the Fourth Proportional to 1,313.74, 1,814.34 and 1,176.40

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Solution

The fourth proportional to 1,313.74, 1,814.34 and 1,176.40 is: 1,624.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.74 : 1,814.34 = 1,176.40 : x
  2. Step 2: Convert to fraction form
    1,313.74/1,814.34 = 1,176.40/x
  3. Step 3: Cross multiply
    1,313.74x = 1,814.34 × 1,176.40
  4. Step 4: Simplify right side
    1,313.74x = 2,134,389.58
  5. Step 5: Solve for x
    x = 2,134,389.58/1,313.74
  6. Step 6: Final answer
    x = 1,624.67

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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.