Home / 2,169.12-2,990.16-1,702.56

Finding the Fourth Proportional to 2,169.12, 2,990.16 and 1,702.56

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Solution

The fourth proportional to 2,169.12, 2,990.16 and 1,702.56 is: 2,347.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.12 : 2,990.16 = 1,702.56 : x
  2. Step 2: Convert to fraction form
    2,169.12/2,990.16 = 1,702.56/x
  3. Step 3: Cross multiply
    2,169.12x = 2,990.16 × 1,702.56
  4. Step 4: Simplify right side
    2,169.12x = 5,090,926.81
  5. Step 5: Solve for x
    x = 5,090,926.81/2,169.12
  6. Step 6: Final answer
    x = 2,347.00

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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.