Home / 1,948.58-2,918.28-1,690.70

Finding the Fourth Proportional to 1,948.58, 2,918.28 and 1,690.70

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Solution

The fourth proportional to 1,948.58, 2,918.28 and 1,690.70 is: 2,532.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.58 : 2,918.28 = 1,690.70 : x
  2. Step 2: Convert to fraction form
    1,948.58/2,918.28 = 1,690.70/x
  3. Step 3: Cross multiply
    1,948.58x = 2,918.28 × 1,690.70
  4. Step 4: Simplify right side
    1,948.58x = 4,933,921.40
  5. Step 5: Solve for x
    x = 4,933,921.40/1,948.58
  6. Step 6: Final answer
    x = 2,532.07

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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.