Home / 2,118.48-2,923.49-1,186.98

Finding the Fourth Proportional to 2,118.48, 2,923.49 and 1,186.98

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Solution

The fourth proportional to 2,118.48, 2,923.49 and 1,186.98 is: 1,638.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.48 : 2,923.49 = 1,186.98 : x
  2. Step 2: Convert to fraction form
    2,118.48/2,923.49 = 1,186.98/x
  3. Step 3: Cross multiply
    2,118.48x = 2,923.49 × 1,186.98
  4. Step 4: Simplify right side
    2,118.48x = 3,470,127.13
  5. Step 5: Solve for x
    x = 3,470,127.13/2,118.48
  6. Step 6: Final answer
    x = 1,638.03

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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.