Home / 1,725.18-2,381.52-1,305.60

Finding the Fourth Proportional to 1,725.18, 2,381.52 and 1,305.60

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Solution

The fourth proportional to 1,725.18, 2,381.52 and 1,305.60 is: 1,802.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.18 : 2,381.52 = 1,305.60 : x
  2. Step 2: Convert to fraction form
    1,725.18/2,381.52 = 1,305.60/x
  3. Step 3: Cross multiply
    1,725.18x = 2,381.52 × 1,305.60
  4. Step 4: Simplify right side
    1,725.18x = 3,109,312.51
  5. Step 5: Solve for x
    x = 3,109,312.51/1,725.18
  6. Step 6: Final answer
    x = 1,802.31

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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.