Home / 2,807.18-4,210.65-1,889.30

Finding the Fourth Proportional to 2,807.18, 4,210.65 and 1,889.30

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Solution

The fourth proportional to 2,807.18, 4,210.65 and 1,889.30 is: 2,833.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.18 : 4,210.65 = 1,889.30 : x
  2. Step 2: Convert to fraction form
    2,807.18/4,210.65 = 1,889.30/x
  3. Step 3: Cross multiply
    2,807.18x = 4,210.65 × 1,889.30
  4. Step 4: Simplify right side
    2,807.18x = 7,955,181.05
  5. Step 5: Solve for x
    x = 7,955,181.05/2,807.18
  6. Step 6: Final answer
    x = 2,833.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.