Home / 2,988.90-4,482.81-1,258.74

Finding the Fourth Proportional to 2,988.90, 4,482.81 and 1,258.74

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Solution

The fourth proportional to 2,988.90, 4,482.81 and 1,258.74 is: 1,887.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.90 : 4,482.81 = 1,258.74 : x
  2. Step 2: Convert to fraction form
    2,988.90/4,482.81 = 1,258.74/x
  3. Step 3: Cross multiply
    2,988.90x = 4,482.81 × 1,258.74
  4. Step 4: Simplify right side
    2,988.90x = 5,642,692.26
  5. Step 5: Solve for x
    x = 5,642,692.26/2,988.90
  6. Step 6: Final answer
    x = 1,887.88

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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.