Home / 1,528.14-2,109.18-969.39

Finding the Fourth Proportional to 1,528.14, 2,109.18 and 969.39

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Solution

The fourth proportional to 1,528.14, 2,109.18 and 969.39 is: 1,337.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.14 : 2,109.18 = 969.39 : x
  2. Step 2: Convert to fraction form
    1,528.14/2,109.18 = 969.39/x
  3. Step 3: Cross multiply
    1,528.14x = 2,109.18 × 969.39
  4. Step 4: Simplify right side
    1,528.14x = 2,044,618.00
  5. Step 5: Solve for x
    x = 2,044,618.00/1,528.14
  6. Step 6: Final answer
    x = 1,337.98

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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.