Home / 1,400.28-2,113.07-1,389.48

Finding the Fourth Proportional to 1,400.28, 2,113.07 and 1,389.48

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Solution

The fourth proportional to 1,400.28, 2,113.07 and 1,389.48 is: 2,096.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.28 : 2,113.07 = 1,389.48 : x
  2. Step 2: Convert to fraction form
    1,400.28/2,113.07 = 1,389.48/x
  3. Step 3: Cross multiply
    1,400.28x = 2,113.07 × 1,389.48
  4. Step 4: Simplify right side
    1,400.28x = 2,936,068.50
  5. Step 5: Solve for x
    x = 2,936,068.50/1,400.28
  6. Step 6: Final answer
    x = 2,096.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.