Home / 4,988.20-7,482.30-4,186.30

Finding the Fourth Proportional to 4,988.20, 7,482.30 and 4,186.30

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Solution

The fourth proportional to 4,988.20, 7,482.30 and 4,186.30 is: 6,279.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.20 : 7,482.30 = 4,186.30 : x
  2. Step 2: Convert to fraction form
    4,988.20/7,482.30 = 4,186.30/x
  3. Step 3: Cross multiply
    4,988.20x = 7,482.30 × 4,186.30
  4. Step 4: Simplify right side
    4,988.20x = 31,323,152.49
  5. Step 5: Solve for x
    x = 31,323,152.49/4,988.20
  6. Step 6: Final answer
    x = 6,279.45

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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.