Home / 1,265.51-1,895.63-1,220.15

Finding the Fourth Proportional to 1,265.51, 1,895.63 and 1,220.15

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Solution

The fourth proportional to 1,265.51, 1,895.63 and 1,220.15 is: 1,827.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.51 : 1,895.63 = 1,220.15 : x
  2. Step 2: Convert to fraction form
    1,265.51/1,895.63 = 1,220.15/x
  3. Step 3: Cross multiply
    1,265.51x = 1,895.63 × 1,220.15
  4. Step 4: Simplify right side
    1,265.51x = 2,312,937.37
  5. Step 5: Solve for x
    x = 2,312,937.37/1,265.51
  6. Step 6: Final answer
    x = 1,827.68

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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.