Home / 2,102.20-2,897.76-1,402.36

Finding the Fourth Proportional to 2,102.20, 2,897.76 and 1,402.36

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Solution

The fourth proportional to 2,102.20, 2,897.76 and 1,402.36 is: 1,933.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.20 : 2,897.76 = 1,402.36 : x
  2. Step 2: Convert to fraction form
    2,102.20/2,897.76 = 1,402.36/x
  3. Step 3: Cross multiply
    2,102.20x = 2,897.76 × 1,402.36
  4. Step 4: Simplify right side
    2,102.20x = 4,063,702.71
  5. Step 5: Solve for x
    x = 4,063,702.71/2,102.20
  6. Step 6: Final answer
    x = 1,933.07

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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.