Home / 2,070.80-2,855.88-1,623.92

Finding the Fourth Proportional to 2,070.80, 2,855.88 and 1,623.92

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Solution

The fourth proportional to 2,070.80, 2,855.88 and 1,623.92 is: 2,239.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.80 : 2,855.88 = 1,623.92 : x
  2. Step 2: Convert to fraction form
    2,070.80/2,855.88 = 1,623.92/x
  3. Step 3: Cross multiply
    2,070.80x = 2,855.88 × 1,623.92
  4. Step 4: Simplify right side
    2,070.80x = 4,637,720.65
  5. Step 5: Solve for x
    x = 4,637,720.65/2,070.80
  6. Step 6: Final answer
    x = 2,239.58

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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.