Home / 5,628.81-8,430.63-3,980.33

Finding the Fourth Proportional to 5,628.81, 8,430.63 and 3,980.33

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Solution

The fourth proportional to 5,628.81, 8,430.63 and 3,980.33 is: 5,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.81 : 8,430.63 = 3,980.33 : x
  2. Step 2: Convert to fraction form
    5,628.81/8,430.63 = 3,980.33/x
  3. Step 3: Cross multiply
    5,628.81x = 8,430.63 × 3,980.33
  4. Step 4: Simplify right side
    5,628.81x = 33,556,689.51
  5. Step 5: Solve for x
    x = 33,556,689.51/5,628.81
  6. Step 6: Final answer
    x = 5,961.60

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Double scale
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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.