Home / 2,887.36-4,333.20-1,913.12

Finding the Fourth Proportional to 2,887.36, 4,333.20 and 1,913.12

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Solution

The fourth proportional to 2,887.36, 4,333.20 and 1,913.12 is: 2,871.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.36 : 4,333.20 = 1,913.12 : x
  2. Step 2: Convert to fraction form
    2,887.36/4,333.20 = 1,913.12/x
  3. Step 3: Cross multiply
    2,887.36x = 4,333.20 × 1,913.12
  4. Step 4: Simplify right side
    2,887.36x = 8,289,931.58
  5. Step 5: Solve for x
    x = 8,289,931.58/2,887.36
  6. Step 6: Final answer
    x = 2,871.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.