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Finding the Fourth Proportional to 7,478.63, 10,320.51 and 4,336.64

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Solution

The fourth proportional to 7,478.63, 10,320.51 and 4,336.64 is: 5,984.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.63 : 10,320.51 = 4,336.64 : x
  2. Step 2: Convert to fraction form
    7,478.63/10,320.51 = 4,336.64/x
  3. Step 3: Cross multiply
    7,478.63x = 10,320.51 × 4,336.64
  4. Step 4: Simplify right side
    7,478.63x = 44,756,336.49
  5. Step 5: Solve for x
    x = 44,756,336.49/7,478.63
  6. Step 6: Final answer
    x = 5,984.56

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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.