Home / 3,485.12-4,809.80-1,913.45

Finding the Fourth Proportional to 3,485.12, 4,809.80 and 1,913.45

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Solution

The fourth proportional to 3,485.12, 4,809.80 and 1,913.45 is: 2,640.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.12 : 4,809.80 = 1,913.45 : x
  2. Step 2: Convert to fraction form
    3,485.12/4,809.80 = 1,913.45/x
  3. Step 3: Cross multiply
    3,485.12x = 4,809.80 × 1,913.45
  4. Step 4: Simplify right side
    3,485.12x = 9,203,302.24
  5. Step 5: Solve for x
    x = 9,203,302.24/3,485.12
  6. Step 6: Final answer
    x = 2,640.74

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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.