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Finding the Fourth Proportional to 3,573.63, 4,931.46 and 1,980.18

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Solution

The fourth proportional to 3,573.63, 4,931.46 and 1,980.18 is: 2,732.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,573.63 : 4,931.46 = 1,980.18 : x
  2. Step 2: Convert to fraction form
    3,573.63/4,931.46 = 1,980.18/x
  3. Step 3: Cross multiply
    3,573.63x = 4,931.46 × 1,980.18
  4. Step 4: Simplify right side
    3,573.63x = 9,765,178.46
  5. Step 5: Solve for x
    x = 9,765,178.46/3,573.63
  6. Step 6: Final answer
    x = 2,732.57

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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.