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Finding the Fourth Proportional to 3,364.71, 5,045.69 and 1,980.81

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Solution

The fourth proportional to 3,364.71, 5,045.69 and 1,980.81 is: 2,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,364.71 : 5,045.69 = 1,980.81 : x
  2. Step 2: Convert to fraction form
    3,364.71/5,045.69 = 1,980.81/x
  3. Step 3: Cross multiply
    3,364.71x = 5,045.69 × 1,980.81
  4. Step 4: Simplify right side
    3,364.71x = 9,994,543.30
  5. Step 5: Solve for x
    x = 9,994,543.30/3,364.71
  6. Step 6: Final answer
    x = 2,970.40

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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.