Home / 2,957.45-4,080.83-1,681.20

Finding the Fourth Proportional to 2,957.45, 4,080.83 and 1,681.20

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Solution

The fourth proportional to 2,957.45, 4,080.83 and 1,681.20 is: 2,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,957.45 : 4,080.83 = 1,681.20 : x
  2. Step 2: Convert to fraction form
    2,957.45/4,080.83 = 1,681.20/x
  3. Step 3: Cross multiply
    2,957.45x = 4,080.83 × 1,681.20
  4. Step 4: Simplify right side
    2,957.45x = 6,860,682.99
  5. Step 5: Solve for x
    x = 6,860,682.99/2,957.45
  6. Step 6: Final answer
    x = 2,319.80

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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.