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Finding the Fourth Proportional to 7,477.79, 10,321.76 and 4,823.15

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Solution

The fourth proportional to 7,477.79, 10,321.76 and 4,823.15 is: 6,657.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.79 : 10,321.76 = 4,823.15 : x
  2. Step 2: Convert to fraction form
    7,477.79/10,321.76 = 4,823.15/x
  3. Step 3: Cross multiply
    7,477.79x = 10,321.76 × 4,823.15
  4. Step 4: Simplify right side
    7,477.79x = 49,783,357.19
  5. Step 5: Solve for x
    x = 49,783,357.19/7,477.79
  6. Step 6: Final answer
    x = 6,657.50

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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.