Home / 2,823.30-3,894.21-1,985.76

Finding the Fourth Proportional to 2,823.30, 3,894.21 and 1,985.76

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Solution

The fourth proportional to 2,823.30, 3,894.21 and 1,985.76 is: 2,738.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,823.30 : 3,894.21 = 1,985.76 : x
  2. Step 2: Convert to fraction form
    2,823.30/3,894.21 = 1,985.76/x
  3. Step 3: Cross multiply
    2,823.30x = 3,894.21 × 1,985.76
  4. Step 4: Simplify right side
    2,823.30x = 7,732,966.45
  5. Step 5: Solve for x
    x = 7,732,966.45/2,823.30
  6. Step 6: Final answer
    x = 2,738.98

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Find fourth proportional to 2,824.30, 3,895.59 and 1,986.76
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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.