Home / 1,688.45-2,330.22-942.67

Finding the Fourth Proportional to 1,688.45, 2,330.22 and 942.67

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Solution

The fourth proportional to 1,688.45, 2,330.22 and 942.67 is: 1,300.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.45 : 2,330.22 = 942.67 : x
  2. Step 2: Convert to fraction form
    1,688.45/2,330.22 = 942.67/x
  3. Step 3: Cross multiply
    1,688.45x = 2,330.22 × 942.67
  4. Step 4: Simplify right side
    1,688.45x = 2,196,629.63
  5. Step 5: Solve for x
    x = 2,196,629.63/1,688.45
  6. Step 6: Final answer
    x = 1,300.98

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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.