Home / 4,205.20-6,307.80-1,127.20

Finding the Fourth Proportional to 4,205.20, 6,307.80 and 1,127.20

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Solution

The fourth proportional to 4,205.20, 6,307.80 and 1,127.20 is: 1,690.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,205.20 : 6,307.80 = 1,127.20 : x
  2. Step 2: Convert to fraction form
    4,205.20/6,307.80 = 1,127.20/x
  3. Step 3: Cross multiply
    4,205.20x = 6,307.80 × 1,127.20
  4. Step 4: Simplify right side
    4,205.20x = 7,110,152.16
  5. Step 5: Solve for x
    x = 7,110,152.16/4,205.20
  6. Step 6: Final answer
    x = 1,690.80

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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.