Home / 2,187.90-3,015.77-1,479.51

Finding the Fourth Proportional to 2,187.90, 3,015.77 and 1,479.51

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Solution

The fourth proportional to 2,187.90, 3,015.77 and 1,479.51 is: 2,039.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.90 : 3,015.77 = 1,479.51 : x
  2. Step 2: Convert to fraction form
    2,187.90/3,015.77 = 1,479.51/x
  3. Step 3: Cross multiply
    2,187.90x = 3,015.77 × 1,479.51
  4. Step 4: Simplify right side
    2,187.90x = 4,461,854.48
  5. Step 5: Solve for x
    x = 4,461,854.48/2,187.90
  6. Step 6: Final answer
    x = 2,039.33

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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.