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Finding the Fourth Proportional to 3,970.24, 5,955.47 and 1,890.46

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Solution

The fourth proportional to 3,970.24, 5,955.47 and 1,890.46 is: 2,835.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.24 : 5,955.47 = 1,890.46 : x
  2. Step 2: Convert to fraction form
    3,970.24/5,955.47 = 1,890.46/x
  3. Step 3: Cross multiply
    3,970.24x = 5,955.47 × 1,890.46
  4. Step 4: Simplify right side
    3,970.24x = 11,258,577.82
  5. Step 5: Solve for x
    x = 11,258,577.82/3,970.24
  6. Step 6: Final answer
    x = 2,835.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.