Home / 1,666.40-2,499.60-973.85

Finding the Fourth Proportional to 1,666.40, 2,499.60 and 973.85

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Solution

The fourth proportional to 1,666.40, 2,499.60 and 973.85 is: 1,460.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.40 : 2,499.60 = 973.85 : x
  2. Step 2: Convert to fraction form
    1,666.40/2,499.60 = 973.85/x
  3. Step 3: Cross multiply
    1,666.40x = 2,499.60 × 973.85
  4. Step 4: Simplify right side
    1,666.40x = 2,434,235.46
  5. Step 5: Solve for x
    x = 2,434,235.46/1,666.40
  6. Step 6: Final answer
    x = 1,460.78

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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.