Home / 1,685.16-2,325.81-977.43

Finding the Fourth Proportional to 1,685.16, 2,325.81 and 977.43

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Solution

The fourth proportional to 1,685.16, 2,325.81 and 977.43 is: 1,349.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.16 : 2,325.81 = 977.43 : x
  2. Step 2: Convert to fraction form
    1,685.16/2,325.81 = 977.43/x
  3. Step 3: Cross multiply
    1,685.16x = 2,325.81 × 977.43
  4. Step 4: Simplify right side
    1,685.16x = 2,273,300.98
  5. Step 5: Solve for x
    x = 2,273,300.98/1,685.16
  6. Step 6: Final answer
    x = 1,349.01

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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.