Home / 2,166.40-2,988.48-1,641.52

Finding the Fourth Proportional to 2,166.40, 2,988.48 and 1,641.52

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Solution

The fourth proportional to 2,166.40, 2,988.48 and 1,641.52 is: 2,264.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.40 : 2,988.48 = 1,641.52 : x
  2. Step 2: Convert to fraction form
    2,166.40/2,988.48 = 1,641.52/x
  3. Step 3: Cross multiply
    2,166.40x = 2,988.48 × 1,641.52
  4. Step 4: Simplify right side
    2,166.40x = 4,905,649.69
  5. Step 5: Solve for x
    x = 4,905,649.69/2,166.40
  6. Step 6: Final answer
    x = 2,264.42

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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.