Home / 1,685.04-2,325.28-939.07

Finding the Fourth Proportional to 1,685.04, 2,325.28 and 939.07

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Solution

The fourth proportional to 1,685.04, 2,325.28 and 939.07 is: 1,295.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.04 : 2,325.28 = 939.07 : x
  2. Step 2: Convert to fraction form
    1,685.04/2,325.28 = 939.07/x
  3. Step 3: Cross multiply
    1,685.04x = 2,325.28 × 939.07
  4. Step 4: Simplify right side
    1,685.04x = 2,183,599.11
  5. Step 5: Solve for x
    x = 2,183,599.11/1,685.04
  6. Step 6: Final answer
    x = 1,295.87

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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.