Home / 1,405.08-2,095.65-1,316.88

Finding the Fourth Proportional to 1,405.08, 2,095.65 and 1,316.88

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Solution

The fourth proportional to 1,405.08, 2,095.65 and 1,316.88 is: 1,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.08 : 2,095.65 = 1,316.88 : x
  2. Step 2: Convert to fraction form
    1,405.08/2,095.65 = 1,316.88/x
  3. Step 3: Cross multiply
    1,405.08x = 2,095.65 × 1,316.88
  4. Step 4: Simplify right side
    1,405.08x = 2,759,719.57
  5. Step 5: Solve for x
    x = 2,759,719.57/1,405.08
  6. Step 6: Final answer
    x = 1,964.10

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1.5x scale

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.