Home / 2,685.64-4,030.02-1,125.51

Finding the Fourth Proportional to 2,685.64, 4,030.02 and 1,125.51

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Solution

The fourth proportional to 2,685.64, 4,030.02 and 1,125.51 is: 1,688.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.64 : 4,030.02 = 1,125.51 : x
  2. Step 2: Convert to fraction form
    2,685.64/4,030.02 = 1,125.51/x
  3. Step 3: Cross multiply
    2,685.64x = 4,030.02 × 1,125.51
  4. Step 4: Simplify right side
    2,685.64x = 4,535,827.81
  5. Step 5: Solve for x
    x = 4,535,827.81/2,685.64
  6. Step 6: Final answer
    x = 1,688.92

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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.