Home / 2,807.96-3,875.33-1,689.48

Finding the Fourth Proportional to 2,807.96, 3,875.33 and 1,689.48

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Solution

The fourth proportional to 2,807.96, 3,875.33 and 1,689.48 is: 2,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.96 : 3,875.33 = 1,689.48 : x
  2. Step 2: Convert to fraction form
    2,807.96/3,875.33 = 1,689.48/x
  3. Step 3: Cross multiply
    2,807.96x = 3,875.33 × 1,689.48
  4. Step 4: Simplify right side
    2,807.96x = 6,547,292.53
  5. Step 5: Solve for x
    x = 6,547,292.53/2,807.96
  6. Step 6: Final answer
    x = 2,331.69

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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.