Home / 1,830.84-2,750.58-1,688.28

Finding the Fourth Proportional to 1,830.84, 2,750.58 and 1,688.28

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Solution

The fourth proportional to 1,830.84, 2,750.58 and 1,688.28 is: 2,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830.84 : 2,750.58 = 1,688.28 : x
  2. Step 2: Convert to fraction form
    1,830.84/2,750.58 = 1,688.28/x
  3. Step 3: Cross multiply
    1,830.84x = 2,750.58 × 1,688.28
  4. Step 4: Simplify right side
    1,830.84x = 4,643,749.20
  5. Step 5: Solve for x
    x = 4,643,749.20/1,830.84
  6. Step 6: Final answer
    x = 2,536.40

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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.