Home / 2,785.84-3,845.28-1,607.74

Finding the Fourth Proportional to 2,785.84, 3,845.28 and 1,607.74

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Solution

The fourth proportional to 2,785.84, 3,845.28 and 1,607.74 is: 2,219.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.84 : 3,845.28 = 1,607.74 : x
  2. Step 2: Convert to fraction form
    2,785.84/3,845.28 = 1,607.74/x
  3. Step 3: Cross multiply
    2,785.84x = 3,845.28 × 1,607.74
  4. Step 4: Simplify right side
    2,785.84x = 6,182,210.47
  5. Step 5: Solve for x
    x = 6,182,210.47/2,785.84
  6. Step 6: Final answer
    x = 2,219.15

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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.