Home / 1,886.85-2,603.88-1,140.68

Finding the Fourth Proportional to 1,886.85, 2,603.88 and 1,140.68

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Solution

The fourth proportional to 1,886.85, 2,603.88 and 1,140.68 is: 1,574.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.85 : 2,603.88 = 1,140.68 : x
  2. Step 2: Convert to fraction form
    1,886.85/2,603.88 = 1,140.68/x
  3. Step 3: Cross multiply
    1,886.85x = 2,603.88 × 1,140.68
  4. Step 4: Simplify right side
    1,886.85x = 2,970,180.82
  5. Step 5: Solve for x
    x = 2,970,180.82/1,886.85
  6. Step 6: Final answer
    x = 1,574.15

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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.