Home / 2,130.84-2,940.98-1,186.92

Finding the Fourth Proportional to 2,130.84, 2,940.98 and 1,186.92

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Solution

The fourth proportional to 2,130.84, 2,940.98 and 1,186.92 is: 1,638.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.84 : 2,940.98 = 1,186.92 : x
  2. Step 2: Convert to fraction form
    2,130.84/2,940.98 = 1,186.92/x
  3. Step 3: Cross multiply
    2,130.84x = 2,940.98 × 1,186.92
  4. Step 4: Simplify right side
    2,130.84x = 3,490,702.05
  5. Step 5: Solve for x
    x = 3,490,702.05/2,130.84
  6. Step 6: Final answer
    x = 1,638.18

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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.