Home / 3,177.84-4,385.40-1,780.60

Finding the Fourth Proportional to 3,177.84, 4,385.40 and 1,780.60

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Solution

The fourth proportional to 3,177.84, 4,385.40 and 1,780.60 is: 2,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.84 : 4,385.40 = 1,780.60 : x
  2. Step 2: Convert to fraction form
    3,177.84/4,385.40 = 1,780.60/x
  3. Step 3: Cross multiply
    3,177.84x = 4,385.40 × 1,780.60
  4. Step 4: Simplify right side
    3,177.84x = 7,808,643.24
  5. Step 5: Solve for x
    x = 7,808,643.24/3,177.84
  6. Step 6: Final answer
    x = 2,457.22

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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.