Home / 1,649.79-2,276.69-986.67

Finding the Fourth Proportional to 1,649.79, 2,276.69 and 986.67

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Solution

The fourth proportional to 1,649.79, 2,276.69 and 986.67 is: 1,361.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.79 : 2,276.69 = 986.67 : x
  2. Step 2: Convert to fraction form
    1,649.79/2,276.69 = 986.67/x
  3. Step 3: Cross multiply
    1,649.79x = 2,276.69 × 986.67
  4. Step 4: Simplify right side
    1,649.79x = 2,246,332.81
  5. Step 5: Solve for x
    x = 2,246,332.81/1,649.79
  6. Step 6: Final answer
    x = 1,361.59

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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.