Home / 1,681.93-2,320.68-973.81

Finding the Fourth Proportional to 1,681.93, 2,320.68 and 973.81

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Solution

The fourth proportional to 1,681.93, 2,320.68 and 973.81 is: 1,343.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.93 : 2,320.68 = 973.81 : x
  2. Step 2: Convert to fraction form
    1,681.93/2,320.68 = 973.81/x
  3. Step 3: Cross multiply
    1,681.93x = 2,320.68 × 973.81
  4. Step 4: Simplify right side
    1,681.93x = 2,259,901.39
  5. Step 5: Solve for x
    x = 2,259,901.39/1,681.93
  6. Step 6: Final answer
    x = 1,343.64

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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.