Home / 3,126.90-4,314.56-1,800.53

Finding the Fourth Proportional to 3,126.90, 4,314.56 and 1,800.53

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Solution

The fourth proportional to 3,126.90, 4,314.56 and 1,800.53 is: 2,484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.90 : 4,314.56 = 1,800.53 : x
  2. Step 2: Convert to fraction form
    3,126.90/4,314.56 = 1,800.53/x
  3. Step 3: Cross multiply
    3,126.90x = 4,314.56 × 1,800.53
  4. Step 4: Simplify right side
    3,126.90x = 7,768,464.14
  5. Step 5: Solve for x
    x = 7,768,464.14/3,126.90
  6. Step 6: Final answer
    x = 2,484.40

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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.