Home / 1,688.93-2,531.54-1,140.95

Finding the Fourth Proportional to 1,688.93, 2,531.54 and 1,140.95

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Solution

The fourth proportional to 1,688.93, 2,531.54 and 1,140.95 is: 1,710.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.93 : 2,531.54 = 1,140.95 : x
  2. Step 2: Convert to fraction form
    1,688.93/2,531.54 = 1,140.95/x
  3. Step 3: Cross multiply
    1,688.93x = 2,531.54 × 1,140.95
  4. Step 4: Simplify right side
    1,688.93x = 2,888,354.86
  5. Step 5: Solve for x
    x = 2,888,354.86/1,688.93
  6. Step 6: Final answer
    x = 1,710.17

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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.