Home / 1,851.39-2,777.45-986.67

Finding the Fourth Proportional to 1,851.39, 2,777.45 and 986.67

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Solution

The fourth proportional to 1,851.39, 2,777.45 and 986.67 is: 1,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.39 : 2,777.45 = 986.67 : x
  2. Step 2: Convert to fraction form
    1,851.39/2,777.45 = 986.67/x
  3. Step 3: Cross multiply
    1,851.39x = 2,777.45 × 986.67
  4. Step 4: Simplify right side
    1,851.39x = 2,740,421.66
  5. Step 5: Solve for x
    x = 2,740,421.66/1,851.39
  6. Step 6: Final answer
    x = 1,480.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.