Home / 2,890.08-3,988.40-1,648

Finding the Fourth Proportional to 2,890.08, 3,988.40 and 1,648

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Solution

The fourth proportional to 2,890.08, 3,988.40 and 1,648 is: 2,274.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.08 : 3,988.40 = 1,648 : x
  2. Step 2: Convert to fraction form
    2,890.08/3,988.40 = 1,648/x
  3. Step 3: Cross multiply
    2,890.08x = 3,988.40 × 1,648
  4. Step 4: Simplify right side
    2,890.08x = 6,572,883.20
  5. Step 5: Solve for x
    x = 6,572,883.20/2,890.08
  6. Step 6: Final answer
    x = 2,274.29

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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.