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Finding the Fourth Proportional to 3,509.71, 4,840.99 and 2,390.20

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Solution

The fourth proportional to 3,509.71, 4,840.99 and 2,390.20 is: 3,296.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.71 : 4,840.99 = 2,390.20 : x
  2. Step 2: Convert to fraction form
    3,509.71/4,840.99 = 2,390.20/x
  3. Step 3: Cross multiply
    3,509.71x = 4,840.99 × 2,390.20
  4. Step 4: Simplify right side
    3,509.71x = 11,570,916.22
  5. Step 5: Solve for x
    x = 11,570,916.22/3,509.71
  6. Step 6: Final answer
    x = 3,296.83

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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.