Home / 1,875.36-2,587.97-1,078.77

Finding the Fourth Proportional to 1,875.36, 2,587.97 and 1,078.77

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Solution

The fourth proportional to 1,875.36, 2,587.97 and 1,078.77 is: 1,488.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.36 : 2,587.97 = 1,078.77 : x
  2. Step 2: Convert to fraction form
    1,875.36/2,587.97 = 1,078.77/x
  3. Step 3: Cross multiply
    1,875.36x = 2,587.97 × 1,078.77
  4. Step 4: Simplify right side
    1,875.36x = 2,791,836.80
  5. Step 5: Solve for x
    x = 2,791,836.80/1,875.36
  6. Step 6: Final answer
    x = 1,488.69

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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.