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Finding the Fourth Proportional to 4,574.79, 6,313.19 and 2,478.90

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Solution

The fourth proportional to 4,574.79, 6,313.19 and 2,478.90 is: 3,420.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,574.79 : 6,313.19 = 2,478.90 : x
  2. Step 2: Convert to fraction form
    4,574.79/6,313.19 = 2,478.90/x
  3. Step 3: Cross multiply
    4,574.79x = 6,313.19 × 2,478.90
  4. Step 4: Simplify right side
    4,574.79x = 15,649,754.30
  5. Step 5: Solve for x
    x = 15,649,754.30/4,574.79
  6. Step 6: Final answer
    x = 3,420.87

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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.