Home / 2,681.39-4,015.08-2,158.53

Finding the Fourth Proportional to 2,681.39, 4,015.08 and 2,158.53

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Solution

The fourth proportional to 2,681.39, 4,015.08 and 2,158.53 is: 3,232.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.39 : 4,015.08 = 2,158.53 : x
  2. Step 2: Convert to fraction form
    2,681.39/4,015.08 = 2,158.53/x
  3. Step 3: Cross multiply
    2,681.39x = 4,015.08 × 2,158.53
  4. Step 4: Simplify right side
    2,681.39x = 8,666,670.63
  5. Step 5: Solve for x
    x = 8,666,670.63/2,681.39
  6. Step 6: Final answer
    x = 3,232.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.