Home / 7,985.54-11,017.40-5,154.80

Finding the Fourth Proportional to 7,985.54, 11,017.40 and 5,154.80

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Solution

The fourth proportional to 7,985.54, 11,017.40 and 5,154.80 is: 7,111.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.54 : 11,017.40 = 5,154.80 : x
  2. Step 2: Convert to fraction form
    7,985.54/11,017.40 = 5,154.80/x
  3. Step 3: Cross multiply
    7,985.54x = 11,017.40 × 5,154.80
  4. Step 4: Simplify right side
    7,985.54x = 56,792,489.70
  5. Step 5: Solve for x
    x = 56,792,489.70/7,985.54
  6. Step 6: Final answer
    x = 7,111.92

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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.