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Finding the Fourth Proportional to 6,890.51, 10,335.40 and 1,959.50

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Solution

The fourth proportional to 6,890.51, 10,335.40 and 1,959.50 is: 2,939.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.51 : 10,335.40 = 1,959.50 : x
  2. Step 2: Convert to fraction form
    6,890.51/10,335.40 = 1,959.50/x
  3. Step 3: Cross multiply
    6,890.51x = 10,335.40 × 1,959.50
  4. Step 4: Simplify right side
    6,890.51x = 20,252,154.83
  5. Step 5: Solve for x
    x = 20,252,154.83/6,890.51
  6. Step 6: Final answer
    x = 2,939.14

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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.