Home / 2,987.51-4,479.06-2,011.55

Finding the Fourth Proportional to 2,987.51, 4,479.06 and 2,011.55

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Solution

The fourth proportional to 2,987.51, 4,479.06 and 2,011.55 is: 3,015.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.51 : 4,479.06 = 2,011.55 : x
  2. Step 2: Convert to fraction form
    2,987.51/4,479.06 = 2,011.55/x
  3. Step 3: Cross multiply
    2,987.51x = 4,479.06 × 2,011.55
  4. Step 4: Simplify right side
    2,987.51x = 9,009,853.14
  5. Step 5: Solve for x
    x = 9,009,853.14/2,987.51
  6. Step 6: Final answer
    x = 3,015.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.