Home / 1,386.20-2,066.06-1,346.60

Finding the Fourth Proportional to 1,386.20, 2,066.06 and 1,346.60

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Solution

The fourth proportional to 1,386.20, 2,066.06 and 1,346.60 is: 2,007.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.20 : 2,066.06 = 1,346.60 : x
  2. Step 2: Convert to fraction form
    1,386.20/2,066.06 = 1,346.60/x
  3. Step 3: Cross multiply
    1,386.20x = 2,066.06 × 1,346.60
  4. Step 4: Simplify right side
    1,386.20x = 2,782,156.40
  5. Step 5: Solve for x
    x = 2,782,156.40/1,386.20
  6. Step 6: Final answer
    x = 2,007.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.