Home / 7,184.95-9,915.35-3,998.50

Finding the Fourth Proportional to 7,184.95, 9,915.35 and 3,998.50

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Solution

The fourth proportional to 7,184.95, 9,915.35 and 3,998.50 is: 5,518.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,184.95 : 9,915.35 = 3,998.50 : x
  2. Step 2: Convert to fraction form
    7,184.95/9,915.35 = 3,998.50/x
  3. Step 3: Cross multiply
    7,184.95x = 9,915.35 × 3,998.50
  4. Step 4: Simplify right side
    7,184.95x = 39,646,526.98
  5. Step 5: Solve for x
    x = 39,646,526.98/7,184.95
  6. Step 6: Final answer
    x = 5,518.00

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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.