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Finding the Fourth Proportional to 3,485.67, 4,810.28 and 1,913.77

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Solution

The fourth proportional to 3,485.67, 4,810.28 and 1,913.77 is: 2,641.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.67 : 4,810.28 = 1,913.77 : x
  2. Step 2: Convert to fraction form
    3,485.67/4,810.28 = 1,913.77/x
  3. Step 3: Cross multiply
    3,485.67x = 4,810.28 × 1,913.77
  4. Step 4: Simplify right side
    3,485.67x = 9,205,749.71
  5. Step 5: Solve for x
    x = 9,205,749.71/3,485.67
  6. Step 6: Final answer
    x = 2,641.03

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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.