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Finding the Fourth Proportional to 1,339.02, 1,848.51 and 1,021.68

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Solution

The fourth proportional to 1,339.02, 1,848.51 and 1,021.68 is: 1,410.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.02 : 1,848.51 = 1,021.68 : x
  2. Step 2: Convert to fraction form
    1,339.02/1,848.51 = 1,021.68/x
  3. Step 3: Cross multiply
    1,339.02x = 1,848.51 × 1,021.68
  4. Step 4: Simplify right side
    1,339.02x = 1,888,585.70
  5. Step 5: Solve for x
    x = 1,888,585.70/1,339.02
  6. Step 6: Final answer
    x = 1,410.42

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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.