Home / 2,162.99-2,985.08-1,218.93

Finding the Fourth Proportional to 2,162.99, 2,985.08 and 1,218.93

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Solution

The fourth proportional to 2,162.99, 2,985.08 and 1,218.93 is: 1,682.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.99 : 2,985.08 = 1,218.93 : x
  2. Step 2: Convert to fraction form
    2,162.99/2,985.08 = 1,218.93/x
  3. Step 3: Cross multiply
    2,162.99x = 2,985.08 × 1,218.93
  4. Step 4: Simplify right side
    2,162.99x = 3,638,597.47
  5. Step 5: Solve for x
    x = 3,638,597.47/2,162.99
  6. Step 6: Final answer
    x = 1,682.21

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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.