Home / 2,330.64-3,215.70-1,386.18

Finding the Fourth Proportional to 2,330.64, 3,215.70 and 1,386.18

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Solution

The fourth proportional to 2,330.64, 3,215.70 and 1,386.18 is: 1,912.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,330.64 : 3,215.70 = 1,386.18 : x
  2. Step 2: Convert to fraction form
    2,330.64/3,215.70 = 1,386.18/x
  3. Step 3: Cross multiply
    2,330.64x = 3,215.70 × 1,386.18
  4. Step 4: Simplify right side
    2,330.64x = 4,457,539.03
  5. Step 5: Solve for x
    x = 4,457,539.03/2,330.64
  6. Step 6: Final answer
    x = 1,912.58

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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.