Home / 1,898.64-2,842.56-1,247.40

Finding the Fourth Proportional to 1,898.64, 2,842.56 and 1,247.40

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Solution

The fourth proportional to 1,898.64, 2,842.56 and 1,247.40 is: 1,867.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.64 : 2,842.56 = 1,247.40 : x
  2. Step 2: Convert to fraction form
    1,898.64/2,842.56 = 1,247.40/x
  3. Step 3: Cross multiply
    1,898.64x = 2,842.56 × 1,247.40
  4. Step 4: Simplify right side
    1,898.64x = 3,545,809.34
  5. Step 5: Solve for x
    x = 3,545,809.34/1,898.64
  6. Step 6: Final answer
    x = 1,867.55

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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.