Home / 4,054.79-5,587.31-2,990.87

Finding the Fourth Proportional to 4,054.79, 5,587.31 and 2,990.87

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Solution

The fourth proportional to 4,054.79, 5,587.31 and 2,990.87 is: 4,121.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,054.79 : 5,587.31 = 2,990.87 : x
  2. Step 2: Convert to fraction form
    4,054.79/5,587.31 = 2,990.87/x
  3. Step 3: Cross multiply
    4,054.79x = 5,587.31 × 2,990.87
  4. Step 4: Simplify right side
    4,054.79x = 16,710,897.32
  5. Step 5: Solve for x
    x = 16,710,897.32/4,054.79
  6. Step 6: Final answer
    x = 4,121.27

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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.