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Finding the Fourth Proportional to 3,485.32, 4,809.73 and 1,913.41

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Solution

The fourth proportional to 3,485.32, 4,809.73 and 1,913.41 is: 2,640.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.32 : 4,809.73 = 1,913.41 : x
  2. Step 2: Convert to fraction form
    3,485.32/4,809.73 = 1,913.41/x
  3. Step 3: Cross multiply
    3,485.32x = 4,809.73 × 1,913.41
  4. Step 4: Simplify right side
    3,485.32x = 9,202,985.48
  5. Step 5: Solve for x
    x = 9,202,985.48/3,485.32
  6. Step 6: Final answer
    x = 2,640.50

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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.