Home / 1,670.67-2,303.64-1,515.15

Finding the Fourth Proportional to 1,670.67, 2,303.64 and 1,515.15

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Solution

The fourth proportional to 1,670.67, 2,303.64 and 1,515.15 is: 2,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.67 : 2,303.64 = 1,515.15 : x
  2. Step 2: Convert to fraction form
    1,670.67/2,303.64 = 1,515.15/x
  3. Step 3: Cross multiply
    1,670.67x = 2,303.64 × 1,515.15
  4. Step 4: Simplify right side
    1,670.67x = 3,490,360.15
  5. Step 5: Solve for x
    x = 3,490,360.15/1,670.67
  6. Step 6: Final answer
    x = 2,089.20

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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.