Home / 3,485.28-4,807.22-2,159.64

Finding the Fourth Proportional to 3,485.28, 4,807.22 and 2,159.64

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Solution

The fourth proportional to 3,485.28, 4,807.22 and 2,159.64 is: 2,978.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.28 : 4,807.22 = 2,159.64 : x
  2. Step 2: Convert to fraction form
    3,485.28/4,807.22 = 2,159.64/x
  3. Step 3: Cross multiply
    3,485.28x = 4,807.22 × 2,159.64
  4. Step 4: Simplify right side
    3,485.28x = 10,381,864.60
  5. Step 5: Solve for x
    x = 10,381,864.60/3,485.28
  6. Step 6: Final answer
    x = 2,978.77

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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.