Home / 9,979.02-13,776.03-7,735.86

Finding the Fourth Proportional to 9,979.02, 13,776.03 and 7,735.86

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Solution

The fourth proportional to 9,979.02, 13,776.03 and 7,735.86 is: 10,679.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.02 : 13,776.03 = 7,735.86 : x
  2. Step 2: Convert to fraction form
    9,979.02/13,776.03 = 7,735.86/x
  3. Step 3: Cross multiply
    9,979.02x = 13,776.03 × 7,735.86
  4. Step 4: Simplify right side
    9,979.02x = 106,569,439.44
  5. Step 5: Solve for x
    x = 106,569,439.44/9,979.02
  6. Step 6: Final answer
    x = 10,679.35

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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.