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Finding the Fourth Proportional to 3,485.71, 4,810.26 and 1,913.77

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Solution

The fourth proportional to 3,485.71, 4,810.26 and 1,913.77 is: 2,640.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.71 : 4,810.26 = 1,913.77 : x
  2. Step 2: Convert to fraction form
    3,485.71/4,810.26 = 1,913.77/x
  3. Step 3: Cross multiply
    3,485.71x = 4,810.26 × 1,913.77
  4. Step 4: Simplify right side
    3,485.71x = 9,205,731.28
  5. Step 5: Solve for x
    x = 9,205,731.28/3,485.71
  6. Step 6: Final answer
    x = 2,640.99

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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.