Home / 2,030.12-3,045.53-643.43

Finding the Fourth Proportional to 2,030.12, 3,045.53 and 643.43

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Solution

The fourth proportional to 2,030.12, 3,045.53 and 643.43 is: 965.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,030.12 : 3,045.53 = 643.43 : x
  2. Step 2: Convert to fraction form
    2,030.12/3,045.53 = 643.43/x
  3. Step 3: Cross multiply
    2,030.12x = 3,045.53 × 643.43
  4. Step 4: Simplify right side
    2,030.12x = 1,959,566.92
  5. Step 5: Solve for x
    x = 1,959,566.92/2,030.12
  6. Step 6: Final answer
    x = 965.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.