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Finding the Fourth Proportional to 9,783.13, 13,500.72 and 5,306.86

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Solution

The fourth proportional to 9,783.13, 13,500.72 and 5,306.86 is: 7,323.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,783.13 : 13,500.72 = 5,306.86 : x
  2. Step 2: Convert to fraction form
    9,783.13/13,500.72 = 5,306.86/x
  3. Step 3: Cross multiply
    9,783.13x = 13,500.72 × 5,306.86
  4. Step 4: Simplify right side
    9,783.13x = 71,646,430.94
  5. Step 5: Solve for x
    x = 71,646,430.94/9,783.13
  6. Step 6: Final answer
    x = 7,323.47

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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.