Home / 2,114.18-2,918.58-1,407.20

Finding the Fourth Proportional to 2,114.18, 2,918.58 and 1,407.20

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Solution

The fourth proportional to 2,114.18, 2,918.58 and 1,407.20 is: 1,942.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.18 : 2,918.58 = 1,407.20 : x
  2. Step 2: Convert to fraction form
    2,114.18/2,918.58 = 1,407.20/x
  3. Step 3: Cross multiply
    2,114.18x = 2,918.58 × 1,407.20
  4. Step 4: Simplify right side
    2,114.18x = 4,107,011.18
  5. Step 5: Solve for x
    x = 4,107,011.18/2,114.18
  6. Step 6: Final answer
    x = 1,942.61

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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.