Home / 8,637.89-11,916.27-5,612.81

Finding the Fourth Proportional to 8,637.89, 11,916.27 and 5,612.81

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Solution

The fourth proportional to 8,637.89, 11,916.27 and 5,612.81 is: 7,743.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637.89 : 11,916.27 = 5,612.81 : x
  2. Step 2: Convert to fraction form
    8,637.89/11,916.27 = 5,612.81/x
  3. Step 3: Cross multiply
    8,637.89x = 11,916.27 × 5,612.81
  4. Step 4: Simplify right side
    8,637.89x = 66,883,699.84
  5. Step 5: Solve for x
    x = 66,883,699.84/8,637.89
  6. Step 6: Final answer
    x = 7,743.06

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1.5x scale

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.