Home / 5,386.28-7,430.78-3,289.19

Finding the Fourth Proportional to 5,386.28, 7,430.78 and 3,289.19

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Solution

The fourth proportional to 5,386.28, 7,430.78 and 3,289.19 is: 4,537.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.28 : 7,430.78 = 3,289.19 : x
  2. Step 2: Convert to fraction form
    5,386.28/7,430.78 = 3,289.19/x
  3. Step 3: Cross multiply
    5,386.28x = 7,430.78 × 3,289.19
  4. Step 4: Simplify right side
    5,386.28x = 24,441,220.47
  5. Step 5: Solve for x
    x = 24,441,220.47/5,386.28
  6. Step 6: Final answer
    x = 4,537.68

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Double scale
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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.