Home / 1,461.80-2,192.70-1,405.10

Finding the Fourth Proportional to 1,461.80, 2,192.70 and 1,405.10

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Solution

The fourth proportional to 1,461.80, 2,192.70 and 1,405.10 is: 2,107.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.80 : 2,192.70 = 1,405.10 : x
  2. Step 2: Convert to fraction form
    1,461.80/2,192.70 = 1,405.10/x
  3. Step 3: Cross multiply
    1,461.80x = 2,192.70 × 1,405.10
  4. Step 4: Simplify right side
    1,461.80x = 3,080,962.77
  5. Step 5: Solve for x
    x = 3,080,962.77/1,461.80
  6. Step 6: Final answer
    x = 2,107.65

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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.