Home / 1,607.20-2,215.76-1,276.72

Finding the Fourth Proportional to 1,607.20, 2,215.76 and 1,276.72

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Solution

The fourth proportional to 1,607.20, 2,215.76 and 1,276.72 is: 1,760.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,607.20 : 2,215.76 = 1,276.72 : x
  2. Step 2: Convert to fraction form
    1,607.20/2,215.76 = 1,276.72/x
  3. Step 3: Cross multiply
    1,607.20x = 2,215.76 × 1,276.72
  4. Step 4: Simplify right side
    1,607.20x = 2,828,905.11
  5. Step 5: Solve for x
    x = 2,828,905.11/1,607.20
  6. Step 6: Final answer
    x = 1,760.15

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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.