Home / 1,488.28-2,053.80-850.34

Finding the Fourth Proportional to 1,488.28, 2,053.80 and 850.34

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Solution

The fourth proportional to 1,488.28, 2,053.80 and 850.34 is: 1,173.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.28 : 2,053.80 = 850.34 : x
  2. Step 2: Convert to fraction form
    1,488.28/2,053.80 = 850.34/x
  3. Step 3: Cross multiply
    1,488.28x = 2,053.80 × 850.34
  4. Step 4: Simplify right side
    1,488.28x = 1,746,428.29
  5. Step 5: Solve for x
    x = 1,746,428.29/1,488.28
  6. Step 6: Final answer
    x = 1,173.45

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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.