Home / 2,860.56-3,946.68-1,681.68

Finding the Fourth Proportional to 2,860.56, 3,946.68 and 1,681.68

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Solution

The fourth proportional to 2,860.56, 3,946.68 and 1,681.68 is: 2,320.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.56 : 3,946.68 = 1,681.68 : x
  2. Step 2: Convert to fraction form
    2,860.56/3,946.68 = 1,681.68/x
  3. Step 3: Cross multiply
    2,860.56x = 3,946.68 × 1,681.68
  4. Step 4: Simplify right side
    2,860.56x = 6,637,052.82
  5. Step 5: Solve for x
    x = 6,637,052.82/2,860.56
  6. Step 6: Final answer
    x = 2,320.19

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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.