Home / 1,590.02-2,190.76-1,215.84

Finding the Fourth Proportional to 1,590.02, 2,190.76 and 1,215.84

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Solution

The fourth proportional to 1,590.02, 2,190.76 and 1,215.84 is: 1,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.02 : 2,190.76 = 1,215.84 : x
  2. Step 2: Convert to fraction form
    1,590.02/2,190.76 = 1,215.84/x
  3. Step 3: Cross multiply
    1,590.02x = 2,190.76 × 1,215.84
  4. Step 4: Simplify right side
    1,590.02x = 2,663,602.04
  5. Step 5: Solve for x
    x = 2,663,602.04/1,590.02
  6. Step 6: Final answer
    x = 1,675.20

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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.