Home / 1,130.95-1,698.65-1,082.35

Finding the Fourth Proportional to 1,130.95, 1,698.65 and 1,082.35

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Solution

The fourth proportional to 1,130.95, 1,698.65 and 1,082.35 is: 1,625.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.95 : 1,698.65 = 1,082.35 : x
  2. Step 2: Convert to fraction form
    1,130.95/1,698.65 = 1,082.35/x
  3. Step 3: Cross multiply
    1,130.95x = 1,698.65 × 1,082.35
  4. Step 4: Simplify right side
    1,130.95x = 1,838,533.83
  5. Step 5: Solve for x
    x = 1,838,533.83/1,130.95
  6. Step 6: Final answer
    x = 1,625.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.