Home / 2,113.07-3,168.47-1,237.28

Finding the Fourth Proportional to 2,113.07, 3,168.47 and 1,237.28

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Solution

The fourth proportional to 2,113.07, 3,168.47 and 1,237.28 is: 1,855.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.07 : 3,168.47 = 1,237.28 : x
  2. Step 2: Convert to fraction form
    2,113.07/3,168.47 = 1,237.28/x
  3. Step 3: Cross multiply
    2,113.07x = 3,168.47 × 1,237.28
  4. Step 4: Simplify right side
    2,113.07x = 3,920,271.81
  5. Step 5: Solve for x
    x = 3,920,271.81/2,113.07
  6. Step 6: Final answer
    x = 1,855.25

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1.5x scale

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.