Home / 5,430.72-8,143.33-2,653.23

Finding the Fourth Proportional to 5,430.72, 8,143.33 and 2,653.23

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Solution

The fourth proportional to 5,430.72, 8,143.33 and 2,653.23 is: 3,978.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.72 : 8,143.33 = 2,653.23 : x
  2. Step 2: Convert to fraction form
    5,430.72/8,143.33 = 2,653.23/x
  3. Step 3: Cross multiply
    5,430.72x = 8,143.33 × 2,653.23
  4. Step 4: Simplify right side
    5,430.72x = 21,606,127.46
  5. Step 5: Solve for x
    x = 21,606,127.46/5,430.72
  6. Step 6: Final answer
    x = 3,978.50

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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.