Home / 2,875.57-3,968.39-1,681.29

Finding the Fourth Proportional to 2,875.57, 3,968.39 and 1,681.29

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Solution

The fourth proportional to 2,875.57, 3,968.39 and 1,681.29 is: 2,320.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.57 : 3,968.39 = 1,681.29 : x
  2. Step 2: Convert to fraction form
    2,875.57/3,968.39 = 1,681.29/x
  3. Step 3: Cross multiply
    2,875.57x = 3,968.39 × 1,681.29
  4. Step 4: Simplify right side
    2,875.57x = 6,672,018.63
  5. Step 5: Solve for x
    x = 6,672,018.63/2,875.57
  6. Step 6: Final answer
    x = 2,320.24

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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.