Home / 1,539.96-2,123.87-1,135.50

Finding the Fourth Proportional to 1,539.96, 2,123.87 and 1,135.50

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Solution

The fourth proportional to 1,539.96, 2,123.87 and 1,135.50 is: 1,566.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.96 : 2,123.87 = 1,135.50 : x
  2. Step 2: Convert to fraction form
    1,539.96/2,123.87 = 1,135.50/x
  3. Step 3: Cross multiply
    1,539.96x = 2,123.87 × 1,135.50
  4. Step 4: Simplify right side
    1,539.96x = 2,411,648.71
  5. Step 5: Solve for x
    x = 2,411,648.71/1,539.96
  6. Step 6: Final answer
    x = 1,566.05

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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.