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Finding the Fourth Proportional to 7,800.46, 10,762.80 and 4,816.42

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Solution

The fourth proportional to 7,800.46, 10,762.80 and 4,816.42 is: 6,645.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.46 : 10,762.80 = 4,816.42 : x
  2. Step 2: Convert to fraction form
    7,800.46/10,762.80 = 4,816.42/x
  3. Step 3: Cross multiply
    7,800.46x = 10,762.80 × 4,816.42
  4. Step 4: Simplify right side
    7,800.46x = 51,838,165.18
  5. Step 5: Solve for x
    x = 51,838,165.18/7,800.46
  6. Step 6: Final answer
    x = 6,645.53

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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.