Home / 2,639.08-3,939.89-2,547.64

Finding the Fourth Proportional to 2,639.08, 3,939.89 and 2,547.64

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Solution

The fourth proportional to 2,639.08, 3,939.89 and 2,547.64 is: 3,803.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.08 : 3,939.89 = 2,547.64 : x
  2. Step 2: Convert to fraction form
    2,639.08/3,939.89 = 2,547.64/x
  3. Step 3: Cross multiply
    2,639.08x = 3,939.89 × 2,547.64
  4. Step 4: Simplify right side
    2,639.08x = 10,037,421.36
  5. Step 5: Solve for x
    x = 10,037,421.36/2,639.08
  6. Step 6: Final answer
    x = 3,803.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.