Home / 1,130.04-1,686.88-976.95

Finding the Fourth Proportional to 1,130.04, 1,686.88 and 976.95

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Solution

The fourth proportional to 1,130.04, 1,686.88 and 976.95 is: 1,458.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.04 : 1,686.88 = 976.95 : x
  2. Step 2: Convert to fraction form
    1,130.04/1,686.88 = 976.95/x
  3. Step 3: Cross multiply
    1,130.04x = 1,686.88 × 976.95
  4. Step 4: Simplify right side
    1,130.04x = 1,647,992.53
  5. Step 5: Solve for x
    x = 1,647,992.53/1,130.04
  6. Step 6: Final answer
    x = 1,458.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.