Home / 1,461.40-2,192.10-999.70

Finding the Fourth Proportional to 1,461.40, 2,192.10 and 999.70

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Solution

The fourth proportional to 1,461.40, 2,192.10 and 999.70 is: 1,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.40 : 2,192.10 = 999.70 : x
  2. Step 2: Convert to fraction form
    1,461.40/2,192.10 = 999.70/x
  3. Step 3: Cross multiply
    1,461.40x = 2,192.10 × 999.70
  4. Step 4: Simplify right side
    1,461.40x = 2,191,442.37
  5. Step 5: Solve for x
    x = 2,191,442.37/1,461.40
  6. Step 6: Final answer
    x = 1,499.55

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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.