Home / 1,315.95-1,973.93-1,235.76

Finding the Fourth Proportional to 1,315.95, 1,973.93 and 1,235.76

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Solution

The fourth proportional to 1,315.95, 1,973.93 and 1,235.76 is: 1,853.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.95 : 1,973.93 = 1,235.76 : x
  2. Step 2: Convert to fraction form
    1,315.95/1,973.93 = 1,235.76/x
  3. Step 3: Cross multiply
    1,315.95x = 1,973.93 × 1,235.76
  4. Step 4: Simplify right side
    1,315.95x = 2,439,303.74
  5. Step 5: Solve for x
    x = 2,439,303.74/1,315.95
  6. Step 6: Final answer
    x = 1,853.64

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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.