Home / 1,590.65-2,192.79-1,117.10

Finding the Fourth Proportional to 1,590.65, 2,192.79 and 1,117.10

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Solution

The fourth proportional to 1,590.65, 2,192.79 and 1,117.10 is: 1,539.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.65 : 2,192.79 = 1,117.10 : x
  2. Step 2: Convert to fraction form
    1,590.65/2,192.79 = 1,117.10/x
  3. Step 3: Cross multiply
    1,590.65x = 2,192.79 × 1,117.10
  4. Step 4: Simplify right side
    1,590.65x = 2,449,554.75
  5. Step 5: Solve for x
    x = 2,449,554.75/1,590.65
  6. Step 6: Final answer
    x = 1,539.98

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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.