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Finding the Fourth Proportional to 2,030.76, 2,813.91 and 1,985.40

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Solution

The fourth proportional to 2,030.76, 2,813.91 and 1,985.40 is: 2,751.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,030.76 : 2,813.91 = 1,985.40 : x
  2. Step 2: Convert to fraction form
    2,030.76/2,813.91 = 1,985.40/x
  3. Step 3: Cross multiply
    2,030.76x = 2,813.91 × 1,985.40
  4. Step 4: Simplify right side
    2,030.76x = 5,586,736.91
  5. Step 5: Solve for x
    x = 5,586,736.91/2,030.76
  6. Step 6: Final answer
    x = 2,751.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.