Home / 2,099.45-2,897.08-1,215.32

Finding the Fourth Proportional to 2,099.45, 2,897.08 and 1,215.32

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Solution

The fourth proportional to 2,099.45, 2,897.08 and 1,215.32 is: 1,677.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.45 : 2,897.08 = 1,215.32 : x
  2. Step 2: Convert to fraction form
    2,099.45/2,897.08 = 1,215.32/x
  3. Step 3: Cross multiply
    2,099.45x = 2,897.08 × 1,215.32
  4. Step 4: Simplify right side
    2,099.45x = 3,520,873.19
  5. Step 5: Solve for x
    x = 3,520,873.19/2,099.45
  6. Step 6: Final answer
    x = 1,677.05

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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.