Home / 2,108.60-2,908.12-1,583.72

Finding the Fourth Proportional to 2,108.60, 2,908.12 and 1,583.72

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Solution

The fourth proportional to 2,108.60, 2,908.12 and 1,583.72 is: 2,184.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.60 : 2,908.12 = 1,583.72 : x
  2. Step 2: Convert to fraction form
    2,108.60/2,908.12 = 1,583.72/x
  3. Step 3: Cross multiply
    2,108.60x = 2,908.12 × 1,583.72
  4. Step 4: Simplify right side
    2,108.60x = 4,605,647.81
  5. Step 5: Solve for x
    x = 4,605,647.81/2,108.60
  6. Step 6: Final answer
    x = 2,184.22

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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.