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Finding the Fourth Proportional to 7,782.16, 10,794.40 and 7,501.96

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Solution

The fourth proportional to 7,782.16, 10,794.40 and 7,501.96 is: 10,405.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,782.16 : 10,794.40 = 7,501.96 : x
  2. Step 2: Convert to fraction form
    7,782.16/10,794.40 = 7,501.96/x
  3. Step 3: Cross multiply
    7,782.16x = 10,794.40 × 7,501.96
  4. Step 4: Simplify right side
    7,782.16x = 80,979,157.02
  5. Step 5: Solve for x
    x = 80,979,157.02/7,782.16
  6. Step 6: Final answer
    x = 10,405.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.