Home / 1,708.96-2,357.86-1,315.28

Finding the Fourth Proportional to 1,708.96, 2,357.86 and 1,315.28

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Solution

The fourth proportional to 1,708.96, 2,357.86 and 1,315.28 is: 1,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.96 : 2,357.86 = 1,315.28 : x
  2. Step 2: Convert to fraction form
    1,708.96/2,357.86 = 1,315.28/x
  3. Step 3: Cross multiply
    1,708.96x = 2,357.86 × 1,315.28
  4. Step 4: Simplify right side
    1,708.96x = 3,101,246.10
  5. Step 5: Solve for x
    x = 3,101,246.10/1,708.96
  6. Step 6: Final answer
    x = 1,814.70

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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.