Home / 3,638.50-5,457.15-1,298.16

Finding the Fourth Proportional to 3,638.50, 5,457.15 and 1,298.16

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Solution

The fourth proportional to 3,638.50, 5,457.15 and 1,298.16 is: 1,947.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.50 : 5,457.15 = 1,298.16 : x
  2. Step 2: Convert to fraction form
    3,638.50/5,457.15 = 1,298.16/x
  3. Step 3: Cross multiply
    3,638.50x = 5,457.15 × 1,298.16
  4. Step 4: Simplify right side
    3,638.50x = 7,084,253.84
  5. Step 5: Solve for x
    x = 7,084,253.84/3,638.50
  6. Step 6: Final answer
    x = 1,947.03

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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.