Home / 1,770.16-2,442.45-1,071.40

Finding the Fourth Proportional to 1,770.16, 2,442.45 and 1,071.40

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Solution

The fourth proportional to 1,770.16, 2,442.45 and 1,071.40 is: 1,478.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.16 : 2,442.45 = 1,071.40 : x
  2. Step 2: Convert to fraction form
    1,770.16/2,442.45 = 1,071.40/x
  3. Step 3: Cross multiply
    1,770.16x = 2,442.45 × 1,071.40
  4. Step 4: Simplify right side
    1,770.16x = 2,616,840.93
  5. Step 5: Solve for x
    x = 2,616,840.93/1,770.16
  6. Step 6: Final answer
    x = 1,478.31

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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.