Home / 3,988.48-5,985.28-1,935.36

Finding the Fourth Proportional to 3,988.48, 5,985.28 and 1,935.36

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Solution

The fourth proportional to 3,988.48, 5,985.28 and 1,935.36 is: 2,904.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.48 : 5,985.28 = 1,935.36 : x
  2. Step 2: Convert to fraction form
    3,988.48/5,985.28 = 1,935.36/x
  3. Step 3: Cross multiply
    3,988.48x = 5,985.28 × 1,935.36
  4. Step 4: Simplify right side
    3,988.48x = 11,583,671.50
  5. Step 5: Solve for x
    x = 11,583,671.50/3,988.48
  6. Step 6: Final answer
    x = 2,904.28

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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.