Home / 1,534.80-2,118.32-1,010.80

Finding the Fourth Proportional to 1,534.80, 2,118.32 and 1,010.80

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Solution

The fourth proportional to 1,534.80, 2,118.32 and 1,010.80 is: 1,395.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.80 : 2,118.32 = 1,010.80 : x
  2. Step 2: Convert to fraction form
    1,534.80/2,118.32 = 1,010.80/x
  3. Step 3: Cross multiply
    1,534.80x = 2,118.32 × 1,010.80
  4. Step 4: Simplify right side
    1,534.80x = 2,141,197.86
  5. Step 5: Solve for x
    x = 2,141,197.86/1,534.80
  6. Step 6: Final answer
    x = 1,395.10

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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.