Home / 2,117.40-3,170.03-1,898.70

Finding the Fourth Proportional to 2,117.40, 3,170.03 and 1,898.70

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Solution

The fourth proportional to 2,117.40, 3,170.03 and 1,898.70 is: 2,842.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.40 : 3,170.03 = 1,898.70 : x
  2. Step 2: Convert to fraction form
    2,117.40/3,170.03 = 1,898.70/x
  3. Step 3: Cross multiply
    2,117.40x = 3,170.03 × 1,898.70
  4. Step 4: Simplify right side
    2,117.40x = 6,018,926.47
  5. Step 5: Solve for x
    x = 6,018,926.47/2,117.40
  6. Step 6: Final answer
    x = 2,842.60

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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.