Home / 4,068.40-6,102.60-990.40

Finding the Fourth Proportional to 4,068.40, 6,102.60 and 990.40

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Solution

The fourth proportional to 4,068.40, 6,102.60 and 990.40 is: 1,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,068.40 : 6,102.60 = 990.40 : x
  2. Step 2: Convert to fraction form
    4,068.40/6,102.60 = 990.40/x
  3. Step 3: Cross multiply
    4,068.40x = 6,102.60 × 990.40
  4. Step 4: Simplify right side
    4,068.40x = 6,044,015.04
  5. Step 5: Solve for x
    x = 6,044,015.04/4,068.40
  6. Step 6: Final answer
    x = 1,485.60

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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.