Home / 1,816.90-2,507.12-1,030.78

Finding the Fourth Proportional to 1,816.90, 2,507.12 and 1,030.78

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Solution

The fourth proportional to 1,816.90, 2,507.12 and 1,030.78 is: 1,422.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.90 : 2,507.12 = 1,030.78 : x
  2. Step 2: Convert to fraction form
    1,816.90/2,507.12 = 1,030.78/x
  3. Step 3: Cross multiply
    1,816.90x = 2,507.12 × 1,030.78
  4. Step 4: Simplify right side
    1,816.90x = 2,584,289.15
  5. Step 5: Solve for x
    x = 2,584,289.15/1,816.90
  6. Step 6: Final answer
    x = 1,422.36

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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.