Home / 1,708.28-2,357.81-1,118.47

Finding the Fourth Proportional to 1,708.28, 2,357.81 and 1,118.47

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Solution

The fourth proportional to 1,708.28, 2,357.81 and 1,118.47 is: 1,543.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.28 : 2,357.81 = 1,118.47 : x
  2. Step 2: Convert to fraction form
    1,708.28/2,357.81 = 1,118.47/x
  3. Step 3: Cross multiply
    1,708.28x = 2,357.81 × 1,118.47
  4. Step 4: Simplify right side
    1,708.28x = 2,637,139.75
  5. Step 5: Solve for x
    x = 2,637,139.75/1,708.28
  6. Step 6: Final answer
    x = 1,543.74

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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.