Home / 1,265.63-1,746.75-1,210.28

Finding the Fourth Proportional to 1,265.63, 1,746.75 and 1,210.28

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Solution

The fourth proportional to 1,265.63, 1,746.75 and 1,210.28 is: 1,670.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.63 : 1,746.75 = 1,210.28 : x
  2. Step 2: Convert to fraction form
    1,265.63/1,746.75 = 1,210.28/x
  3. Step 3: Cross multiply
    1,265.63x = 1,746.75 × 1,210.28
  4. Step 4: Simplify right side
    1,265.63x = 2,114,047.86
  5. Step 5: Solve for x
    x = 2,114,047.86/1,265.63
  6. Step 6: Final answer
    x = 1,670.36

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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.