Home / 9,281.28-13,917.56-5,386.80

Finding the Fourth Proportional to 9,281.28, 13,917.56 and 5,386.80

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Solution

The fourth proportional to 9,281.28, 13,917.56 and 5,386.80 is: 8,077.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,281.28 : 13,917.56 = 5,386.80 : x
  2. Step 2: Convert to fraction form
    9,281.28/13,917.56 = 5,386.80/x
  3. Step 3: Cross multiply
    9,281.28x = 13,917.56 × 5,386.80
  4. Step 4: Simplify right side
    9,281.28x = 74,971,112.21
  5. Step 5: Solve for x
    x = 74,971,112.21/9,281.28
  6. Step 6: Final answer
    x = 8,077.67

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1.5x scale

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.