Home / 3,637.80-5,454.72-1,688.28

Finding the Fourth Proportional to 3,637.80, 5,454.72 and 1,688.28

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Solution

The fourth proportional to 3,637.80, 5,454.72 and 1,688.28 is: 2,531.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,637.80 : 5,454.72 = 1,688.28 : x
  2. Step 2: Convert to fraction form
    3,637.80/5,454.72 = 1,688.28/x
  3. Step 3: Cross multiply
    3,637.80x = 5,454.72 × 1,688.28
  4. Step 4: Simplify right side
    3,637.80x = 9,209,094.68
  5. Step 5: Solve for x
    x = 9,209,094.68/3,637.80
  6. Step 6: Final answer
    x = 2,531.50

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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.