Home / 3,126.65-4,315.23-1,800.32

Finding the Fourth Proportional to 3,126.65, 4,315.23 and 1,800.32

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Solution

The fourth proportional to 3,126.65, 4,315.23 and 1,800.32 is: 2,484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.65 : 4,315.23 = 1,800.32 : x
  2. Step 2: Convert to fraction form
    3,126.65/4,315.23 = 1,800.32/x
  3. Step 3: Cross multiply
    3,126.65x = 4,315.23 × 1,800.32
  4. Step 4: Simplify right side
    3,126.65x = 7,768,773.30
  5. Step 5: Solve for x
    x = 7,768,773.30/3,126.65
  6. Step 6: Final answer
    x = 2,484.70

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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.