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Finding the Fourth Proportional to 3,603.71, 4,973.59 and 2,112.90

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Solution

The fourth proportional to 3,603.71, 4,973.59 and 2,112.90 is: 2,916.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.71 : 4,973.59 = 2,112.90 : x
  2. Step 2: Convert to fraction form
    3,603.71/4,973.59 = 2,112.90/x
  3. Step 3: Cross multiply
    3,603.71x = 4,973.59 × 2,112.90
  4. Step 4: Simplify right side
    3,603.71x = 10,508,698.39
  5. Step 5: Solve for x
    x = 10,508,698.39/3,603.71
  6. Step 6: Final answer
    x = 2,916.08

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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.