Home / 1,708.23-2,357.60-1,428.02

Finding the Fourth Proportional to 1,708.23, 2,357.60 and 1,428.02

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Solution

The fourth proportional to 1,708.23, 2,357.60 and 1,428.02 is: 1,970.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.23 : 2,357.60 = 1,428.02 : x
  2. Step 2: Convert to fraction form
    1,708.23/2,357.60 = 1,428.02/x
  3. Step 3: Cross multiply
    1,708.23x = 2,357.60 × 1,428.02
  4. Step 4: Simplify right side
    1,708.23x = 3,366,699.95
  5. Step 5: Solve for x
    x = 3,366,699.95/1,708.23
  6. Step 6: Final answer
    x = 1,970.87

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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.