Home / 2,083.95-2,875.85-1,139.74

Finding the Fourth Proportional to 2,083.95, 2,875.85 and 1,139.74

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Solution

The fourth proportional to 2,083.95, 2,875.85 and 1,139.74 is: 1,572.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,083.95 : 2,875.85 = 1,139.74 : x
  2. Step 2: Convert to fraction form
    2,083.95/2,875.85 = 1,139.74/x
  3. Step 3: Cross multiply
    2,083.95x = 2,875.85 × 1,139.74
  4. Step 4: Simplify right side
    2,083.95x = 3,277,715.58
  5. Step 5: Solve for x
    x = 3,277,715.58/2,083.95
  6. Step 6: Final answer
    x = 1,572.84

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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.