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Finding the Fourth Proportional to 2,390.52, 3,300.04 and 1,953.12

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Solution

The fourth proportional to 2,390.52, 3,300.04 and 1,953.12 is: 2,696.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.52 : 3,300.04 = 1,953.12 : x
  2. Step 2: Convert to fraction form
    2,390.52/3,300.04 = 1,953.12/x
  3. Step 3: Cross multiply
    2,390.52x = 3,300.04 × 1,953.12
  4. Step 4: Simplify right side
    2,390.52x = 6,445,374.12
  5. Step 5: Solve for x
    x = 6,445,374.12/2,390.52
  6. Step 6: Final answer
    x = 2,696.22

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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.