Home / 2,875.74-3,968.52-1,681.53

Finding the Fourth Proportional to 2,875.74, 3,968.52 and 1,681.53

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Solution

The fourth proportional to 2,875.74, 3,968.52 and 1,681.53 is: 2,320.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.74 : 3,968.52 = 1,681.53 : x
  2. Step 2: Convert to fraction form
    2,875.74/3,968.52 = 1,681.53/x
  3. Step 3: Cross multiply
    2,875.74x = 3,968.52 × 1,681.53
  4. Step 4: Simplify right side
    2,875.74x = 6,673,185.44
  5. Step 5: Solve for x
    x = 6,673,185.44/2,875.74
  6. Step 6: Final answer
    x = 2,320.51

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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.