Home / 1,664.40-2,496.60-971.85

Finding the Fourth Proportional to 1,664.40, 2,496.60 and 971.85

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Solution

The fourth proportional to 1,664.40, 2,496.60 and 971.85 is: 1,457.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.40 : 2,496.60 = 971.85 : x
  2. Step 2: Convert to fraction form
    1,664.40/2,496.60 = 971.85/x
  3. Step 3: Cross multiply
    1,664.40x = 2,496.60 × 971.85
  4. Step 4: Simplify right side
    1,664.40x = 2,426,320.71
  5. Step 5: Solve for x
    x = 2,426,320.71/1,664.40
  6. Step 6: Final answer
    x = 1,457.78

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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.