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Finding the Fourth Proportional to 3,165.52, 4,368.12 and 1,970.40

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Solution

The fourth proportional to 3,165.52, 4,368.12 and 1,970.40 is: 2,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.52 : 4,368.12 = 1,970.40 : x
  2. Step 2: Convert to fraction form
    3,165.52/4,368.12 = 1,970.40/x
  3. Step 3: Cross multiply
    3,165.52x = 4,368.12 × 1,970.40
  4. Step 4: Simplify right side
    3,165.52x = 8,606,943.65
  5. Step 5: Solve for x
    x = 8,606,943.65/3,165.52
  6. Step 6: Final answer
    x = 2,718.97

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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.