Home / 2,990.03-4,129.38-1,873.58

Finding the Fourth Proportional to 2,990.03, 4,129.38 and 1,873.58

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Solution

The fourth proportional to 2,990.03, 4,129.38 and 1,873.58 is: 2,587.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.03 : 4,129.38 = 1,873.58 : x
  2. Step 2: Convert to fraction form
    2,990.03/4,129.38 = 1,873.58/x
  3. Step 3: Cross multiply
    2,990.03x = 4,129.38 × 1,873.58
  4. Step 4: Simplify right side
    2,990.03x = 7,736,703.13
  5. Step 5: Solve for x
    x = 7,736,703.13/2,990.03
  6. Step 6: Final answer
    x = 2,587.50

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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.